Atoms And The Periodic Table Period 6
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Do you know what an element is composed of? It is made up of atoms, which are the smallest amount of matter that consists of nucleus surrounded by electrons. It’s incapable of division as it’s the smallest unit of a substance. Find out some more about the history of atoms.
Questions and Answers
- 1.
Why was Daltons atomic theory accepted more than Democritus's theory?
- A.
Dalton was more wealthy and respected
- B.
Dalton was of English decent and not Greek
- C.
Dalton's model had evidence to support it
- D.
People were ready for change
Correct Answer
C. Dalton's model had evidence to support itExplanation
Dalton's atomic theory was accepted more than Democritus's theory because Dalton's model had evidence to support it. This means that Dalton's theory was based on experimental observations and scientific evidence, making it more credible and convincing to the scientific community. On the other hand, Democritus's theory was more of a philosophical idea without substantial evidence to back it up. Therefore, the presence of evidence in Dalton's model made it more acceptable and widely adopted.Rate this question:
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- 2.
Is the following image an accurate depiction of Dalton's atomic model?
- A.
Yes. It accurately depicts subatomic particles
- B.
No. Dalton's model did not have subatomic particles
Correct Answer
B. No. Dalton's model did not have subatomic particlesExplanation
Dalton's atomic model, proposed in the early 19th century, did not include the concept of subatomic particles. According to Dalton, atoms were indivisible and indestructible particles that combined to form compounds in simple whole number ratios. Subatomic particles such as protons, neutrons, and electrons were discovered and incorporated into atomic models later on, such as Thomson's plum pudding model and Rutherford's nuclear model. Therefore, the given image cannot be an accurate depiction of Dalton's atomic model as it includes subatomic particles.Rate this question:
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- 3.
Which two subatomic particle are located in the nucleus?
- A.
Protons and electrons
- B.
Electrons and megatrons
- C.
Neutrons and protons
- D.
Neutrons and electrons
Correct Answer
C. Neutrons and protonsExplanation
Neutrons and protons are located in the nucleus of an atom. Neutrons are neutral particles with no charge, while protons have a positive charge. Electrons, on the other hand, are found outside the nucleus in energy levels or orbitals. Megatrons are not subatomic particles and do not exist. Therefore, the correct answer is neutrons and protons.Rate this question:
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- 4.
Which particle has a negative charge?
- A.
Electron
- B.
Proton
- C.
Neutron
Correct Answer
A. ElectronExplanation
Electrons are particles that have a negative charge. They are found in the electron cloud surrounding the nucleus of an atom. Electrons are fundamental particles and are the carriers of electricity in conductors. They play a crucial role in chemical reactions and bonding between atoms. Protons, on the other hand, have a positive charge, and neutrons have no charge. Therefore, the correct answer is electron.Rate this question:
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- 5.
What is the charge of a proton?
- A.
Positive
- B.
Negative
- C.
Neutral
Correct Answer
A. PositiveExplanation
A proton has a positive charge. Protons are subatomic particles found in the nucleus of an atom and they have a charge of +1. This positive charge is equal in magnitude but opposite in sign to the negative charge of an electron. The charge of a proton is fundamental to the structure of atoms and plays a crucial role in determining the behavior of matter.Rate this question:
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- 6.
What is the charge of a neutron?
- A.
Positive
- B.
Negative
- C.
Neutral
Correct Answer
C. NeutralExplanation
A neutron has a charge of neutral. Unlike protons, which have a positive charge, and electrons, which have a negative charge, neutrons do not have any charge. They are electrically neutral particles.Rate this question:
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- 7.
What does the atomic number tell you?
- A.
The number of neutrons in the nucleus
- B.
An atoms mass
- C.
The number of protons in the nucleus
- D.
The mols of atom equivalent to 6.022 x 10^23
Correct Answer
C. The number of protons in the nucleusExplanation
The atomic number tells you the number of protons in the nucleus of an atom. Protons are positively charged particles and their number determines the element's identity. Each element has a unique atomic number, which is why the periodic table is organized based on this number. The atomic number also indirectly tells you the number of electrons in a neutral atom, as the number of protons and electrons are equal in an atom.Rate this question:
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- 8.
Which particle is by far the smallest?
- A.
Proton
- B.
Neutron
- C.
Electron
Correct Answer
C. ElectronExplanation
The electron is by far the smallest particle. It is a subatomic particle that carries a negative electric charge and is found outside the atomic nucleus. Protons and neutrons are much larger particles found within the atomic nucleus.Rate this question:
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- 9.
This model has electrons orbiting the nucleus like planets around the sun?
- A.
Dalton's Model
- B.
Democritus's Model
- C.
Bohr's Model
- D.
Modern Atomic Model
Correct Answer
C. Bohr's ModelExplanation
Bohr's Model is the correct answer because it proposed that electrons orbit the nucleus in specific energy levels, similar to how planets orbit the sun. This model was developed by Niels Bohr in 1913 and it explained the stability of atoms and the emission and absorption of light by electrons. According to this model, electrons can only exist in certain discrete energy levels, and they can jump between these levels by absorbing or emitting energy. This concept of electron orbits resembling planetary orbits was a significant advancement in our understanding of atomic structure.Rate this question:
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- 10.
According to Bohr's model of the atom the 3rd energy level can only hold up to 8 electrons?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Bohr's model of the atom states that the maximum number of electrons that can occupy a particular energy level is given by the formula 2n^2, where n is the principal quantum number. Therefore, according to Bohr's model, the 3rd energy level can hold up to 2(3)^2 = 18 electrons, not just 8. This means that the statement "the 3rd energy level can only hold up to 8 electrons" is incorrect.Rate this question:
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- 11.
How many electrons can be found in the S orbitals?
- A.
2
- B.
8
- C.
10
- D.
12
Correct Answer
A. 2Explanation
The S orbitals can hold a maximum of 2 electrons. This is because the S orbital is the first energy level and has only one sublevel, which can accommodate a maximum of 2 electrons according to the Pauli exclusion principle.Rate this question:
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- 12.
How many electrons can be found in the p orbitals?
- A.
6
- B.
8
- C.
10
- D.
12
Correct Answer
A. 6Explanation
The p orbitals can hold a maximum of 6 electrons. This is because there are three p orbitals (px, py, and pz) and each orbital can hold a maximum of 2 electrons. Therefore, 3 orbitals x 2 electrons per orbital = 6 electrons.Rate this question:
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- 13.
How many electrons can be found in the d orbitals?
- A.
6
- B.
8
- C.
10
- D.
12
Correct Answer
C. 10Explanation
In the d orbitals, there are five different orbitals (dxy, dxz, dyz, dx2-y2, and dz2), each of which can hold a maximum of 2 electrons. Therefore, the total number of electrons that can be found in the d orbitals is 5 x 2 = 10.Rate this question:
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- 14.
Which of the following is the correct electron configuration for Bromine?
- A.
[Ar] 4s24p5
- B.
[Ar] 4s23d104p5
- C.
[Ar] 4s23d104p6
- D.
[Ar] 4s23d104p65s1
Correct Answer
B. [Ar] 4s23d104p5Explanation
The correct electron configuration for Bromine is [Ar] 4s23d104p5. This configuration indicates that Bromine has 35 electrons. The [Ar] represents the electron configuration of Argon, which has 18 electrons. The 4s23d104p5 indicates the distribution of the remaining 17 electrons in the 4s, 3d, and 4p orbitals.Rate this question:
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- 15.
Which is the first element to have 4d electrons in its electron configuration?
- A.
Ca
- B.
Sc
- C.
Rb
- D.
Y
Correct Answer
D. YExplanation
The element with the electron configuration that includes 4d electrons is Y (yttrium).Rate this question:
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- 16.
Is the following a correct electron configuration? 1s22s22p63s23p64s24d104p6
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
The given electron configuration is not correct because it violates the Pauli exclusion principle and Hund's rule. According to the Pauli exclusion principle, each orbital can hold a maximum of two electrons with opposite spins. However, in the given configuration, the 4s orbital has 4 electrons, which is not possible. Additionally, Hund's rule states that electrons will occupy empty orbitals before pairing up, but in the given configuration, the 4p orbital has all 6 electrons paired up. Hence, the given electron configuration is incorrect.Rate this question:
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- 17.
Does Sodium or Chlorine have higher metalliic properties?
- A.
Sodium
- B.
Chlorine
Correct Answer
B. ChlorineExplanation
Chlorine has higher metallic properties compared to sodium. This is because chlorine is a non-metal and has a higher tendency to gain electrons to achieve a stable electron configuration. It readily accepts electrons to form negatively charged ions, making it more metallic in nature. On the other hand, sodium is a metal that tends to lose electrons to form positively charged ions. Therefore, chlorine exhibits higher metallic properties than sodium.Rate this question:
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- 18.
Does Neon or Radon have a lower ionization energy?
- A.
Neon
- B.
Radon
Correct Answer
B. RadonExplanation
Radon has a lower ionization energy compared to Neon. This is because Radon is a larger atom with more electron shells, which results in a weaker attraction between the nucleus and the outermost electron. As a result, it is easier to remove an electron from Radon, requiring less energy, compared to Neon.Rate this question:
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- 19.
Which section of the periodic table would have the highest atomic radius??
- A.
Bottom left corner
- B.
Upper left corner
- C.
Upper right corner
- D.
Bottom right corner
Correct Answer
A. Bottom left cornerExplanation
The bottom left corner of the periodic table corresponds to the alkali metals and the alkaline earth metals. These elements have the highest atomic radius because they have the fewest protons and electrons in their outermost energy level. As you move down a group in the periodic table, the number of energy levels increases, resulting in a larger atomic radius. Additionally, as you move from left to right across a period, the number of protons and electrons increases, causing the atomic radius to decrease. Therefore, the elements in the bottom left corner have the highest atomic radius.Rate this question:
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- 20.
The Periodic Law states that when atoms are arranged by the number of protons they show a pattern of chemical and physical properties.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The Periodic Law is a fundamental principle in chemistry that states that the properties of elements are periodic functions of their atomic numbers. This means that as the number of protons in an atom increases, there is a repeating pattern of chemical and physical properties. This pattern is observed in the periodic table, where elements are arranged in order of increasing atomic number. Therefore, the statement that the Periodic Law states that when atoms are arranged by the number of protons they show a pattern of chemical and physical properties is true.Rate this question:
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- 21.
When an atom loses an electron it has an overall _________ charge and is called a(n) _____________
- A.
Positive, anion
- B.
Positive, cation
- C.
Negative, anion
- D.
Negative, cation
Correct Answer
B. Positive, cationExplanation
When an atom loses an electron, it has an overall positive charge because it now has more protons than electrons. This type of atom is called a cation.Rate this question:
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- 22.
When an atom gains an electron it has an overall _________ charge and is called a(n) _____________
- A.
Positive, anion
- B.
Positive, cation
- C.
Negative, anion
- D.
Negative, cation
Correct Answer
C. Negative, anionExplanation
When an atom gains an electron, it increases its negative charge. This is because electrons have a negative charge. Therefore, when an atom gains an electron, it becomes negatively charged and is called an anion.Rate this question:
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- 23.
When an atom loses or gains an electron it undergoes....
- A.
Orbital splitting
- B.
Ionization
- C.
Electron configuration
- D.
Molar mass
Correct Answer
B. IonizationExplanation
When an atom loses or gains an electron, it undergoes ionization. Ionization refers to the process in which an atom becomes an ion by either losing or gaining electrons. This leads to a change in the overall charge of the atom, as ions have a positive or negative charge depending on whether they have lost or gained electrons. Ionization plays a crucial role in various chemical reactions and is a fundamental concept in understanding the behavior of atoms and molecules.Rate this question:
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- 24.
Atoms go through ionization in order ot get a full outer shell of electrons? T/F
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Atoms go through ionization in order to get a full outer shell of electrons. Ionization is the process in which an atom gains or loses electrons to achieve a stable electron configuration. By gaining or losing electrons, atoms can achieve a full outer shell, which is the most stable configuration. This process occurs in various chemical reactions and is essential for the formation of ions and the stability of atoms. Therefore, the statement "Atoms go through ionization in order to get a full outer shell of electrons" is true.Rate this question:
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- 25.
An atom of Helium has a full outer shell of 8 electrons? T/F
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
An atom of helium actually has a full outer shell of only 2 electrons, not 8. Helium is in the first group of the periodic table, which means it has 2 electrons in its outermost shell. This makes it a stable and inert element.Rate this question:
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- 26.
What two orbitals are considered the "outer shell?
- A.
S and P
- B.
S and D
- C.
P and D
- D.
P and F
Correct Answer
A. S and PExplanation
The "outer shell" refers to the valence shell, which is the outermost shell of an atom. In the given options, the S and P orbitals are considered the outer shell because they are the highest energy orbitals in the valence shell. The S orbital can hold a maximum of 2 electrons, while the P orbital can hold a maximum of 6 electrons. These orbitals are involved in the formation of chemical bonds and determine the reactivity and chemical properties of an atom.Rate this question:
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- 27.
How many protons are in 1 element of Radon?
- A.
86
- B.
222
- C.
308
- D.
136
Correct Answer
A. 86Explanation
The atomic number of an element represents the number of protons in its nucleus. In this case, the element is Radon, and its atomic number is 86. Therefore, there are 86 protons in one element of Radon.Rate this question:
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- 28.
How many electrons are in 1 element of Radon?
- A.
86
- B.
222
- C.
308
- D.
136
Correct Answer
A. 86Explanation
Radon is a chemical element with the atomic number 86. The atomic number represents the number of protons in an atom, which also equals the number of electrons. Therefore, there are 86 electrons in one element of Radon.Rate this question:
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- 29.
How many neutrons are in 1 element of Radon?
- A.
86
- B.
222
- C.
308
- D.
136
Correct Answer
D. 136Explanation
Radon is a chemical element with the atomic number 86, which means it has 86 protons in its nucleus. The atomic mass of Radon is 222, which is the sum of protons and neutrons. Therefore, to find the number of neutrons, we subtract the atomic number from the atomic mass: 222 - 86 = 136. Hence, there are 136 neutrons in one element of Radon.Rate this question:
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- 30.
An isotope is when an atom has the same number of protons but a different number of electrons. T/F
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
An isotope is when an atom has the same number of protons but a different number of neutrons, not electrons. Isotopes are atoms of the same element with different mass numbers due to the varying number of neutrons in their nuclei. The number of protons, which determines the element's identity, remains the same in isotopes.Rate this question:
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- 31.
Calculate the Average atomic mass of the three isotopes of Neon.
- A.
20.75
- B.
21.01
- C.
22.00
- D.
20.11
Correct Answer
A. 20.75Explanation
The average atomic mass of the three isotopes of Neon can be calculated by taking the weighted average of their masses. The given answer of 20.75 is the correct average atomic mass.Rate this question:
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- 32.
This family of elements is highly reactive with water and has only 1 valence electron
- A.
Alkali Metals
- B.
Halogens
- C.
Transition Metals
- D.
Noble Gases
Correct Answer
A. Alkali MetalsExplanation
Alkali metals are highly reactive with water and have only 1 valence electron. This electron is easily lost, making alkali metals very reactive and prone to forming positive ions. They are located in Group 1 of the periodic table and include elements such as lithium, sodium, and potassium. These metals are known for their ability to react vigorously with water, producing hydrogen gas and alkaline solutions.Rate this question:
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- 33.
This family of elements is found in the earths crust and goes through ionization to get a charge of +2
- A.
Alkali Metals
- B.
Alkaline Earth Metals
- C.
Noble Gases
- D.
Semi Conductors
Correct Answer
B. Alkaline Earth MetalsExplanation
Alkaline Earth Metals are a family of elements found in the earth's crust. They have two valence electrons and tend to lose these electrons through ionization to achieve a stable electron configuration with a charge of +2. This ionization process allows them to form ionic compounds with other elements. Examples of alkaline earth metals include magnesium, calcium, and barium.Rate this question:
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- 34.
This family of elements has a full outer shell of electrons and does not react with any other element
- A.
Alkali Metals
- B.
Halogens
- C.
Noble Gases
- D.
Semi Conductors
Correct Answer
C. Noble GasesExplanation
Noble gases have a full outer shell of electrons, making them chemically stable and unreactive with other elements. This is due to their configuration of electrons, which satisfies the octet rule. As a result, noble gases do not readily form compounds or react with other elements, making them inert.Rate this question:
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- 35.
This family of elements often forms anions and is highly reactive with the alkali metals to get a full outer shell
- A.
Transition Metals
- B.
Halogens
- C.
Alkali Metals
- D.
Noble Gases
Correct Answer
B. HalogensExplanation
The correct answer is Halogens. Halogens are a family of elements that often form anions and are highly reactive with alkali metals. They have seven valence electrons and only need one additional electron to complete their outer shell. This high reactivity is due to their strong desire to gain one electron, making them highly reactive with alkali metals, which have one valence electron that they are willing to lose.Rate this question:
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- 36.
What is Avogadro's constant (6.022 X 10^23) ?
- A.
The mass of an atom
- B.
The number of atoms in 1 mol of a substance
- C.
The number of moles in a mole hole
- D.
The number of electrons in the outer energy level
Correct Answer
B. The number of atoms in 1 mol of a substanceExplanation
Avogadro's constant, 6.022 x 10^23, represents the number of atoms in 1 mole of a substance. It is a fundamental constant in chemistry and is used to relate the mass of a substance to the number of atoms or molecules it contains. This constant allows scientists to make calculations and conversions between mass and number of particles, making it an essential concept in stoichiometry and other areas of chemistry.Rate this question:
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- 37.
What is the molar mass of 1 molecule of methane (CH4)?
- A.
16
- B.
10
- C.
9
- D.
18
Correct Answer
A. 16Explanation
Methane (CH4) consists of one carbon atom and four hydrogen atoms. The atomic mass of carbon is 12, and the atomic mass of hydrogen is 1. By adding up the atomic masses of each atom in one molecule of methane, we get a molar mass of 16 grams.Rate this question:
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.gif "Is the following image an accurate depiction of Dalton's atomic model?")
.jpg "Which particle has a negative charge?")
.png "Does Sodium or Chlorine have higher metalliic properties?")
.jpg "Atoms go through ionization in order ot get a full outer shell of electrons? T/F")
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