Simple Quiz On Atomic Structure
Simple quiz on atomic structure, chemical bonding and the periodic table.
- 1.What are isotopes?
- A.
A) They have the same number of neutrons but different number of protons.
- B.
B) They have different number of neutrons and protons but same number of electrons
- C.
C) They have different number of neutrons and electrons but same number of protons
- D.
D) They have different number of neutrons but same number of protons.
- 2.If a principal quantum shell has the number n=2, what is the maximum number of electron it can have?
- A.
2
- B.
4
- C.
6
- D.
8
- 3.Which electronic configuration represents Chromium?
- A.
A) 1s2 2s2 2p6 3s2 3p6 4s1
- B.
B) 1s2 2s2 2p6 3s2 3p4 4s2
- C.
C) 1s2 2s2 2p6 3s2 3p5 4s1
- D.
D) 1s2 2s2 2p6 3s2 4s1 3p6
- 4.Given that Copper exists as copper 63 and copper 65 and their relative atomic mass is 63.6, find the relative abundance of each isotope.
- A.
Cu63 - 30 Cu 65 - 70
- B.
Cu 63 - 30 Cu 65 - 70
- C.
Cu 63 - 40 Cu 65 - 60
- D.
Cu 63 - 60 Cu 65 - 40
- 5.Particles, ions or atoms that have the same number of ... are isoelectronic?
- A.
Protons
- B.
Neutrons
- C.
Electrons
- D.
Elements
- 6.Which electronic configuration is stable?
- A.
A) 1s2 2s2 2p6
- B.
B) 1s2 2s2 2p6 3s2 3p6 4s1
- C.
C) 1s2 2s2 2p6 3s2
- D.
D) 1s2 2s2 2p3
- 7.Aufbau’s Principle states that:
- A.
A) Electrons in their ground state will occupy orbitals in order of their energy level; the lowest energy levels are always filled first.
- B.
B) The orbitals of a subshell must be singly occupied with electrons of parallel spin before they can be occupied in pairs.
- C.
C) An orbital cannot contain more than 2 electrons. If 2 electrons occupy the same orbitals, they must have opposite spins; i.e. one up spin and one down spin
- D.
D) None of the above
- 8.Since isotopes have the same number of electrons, they then have the same...?
- A.
Chemical properties
- B.
Melting point
- C.
Boiling point
- D.
Density
- 9.Element P has the electronic configuration 2.8.6.Element Q has the electronic configuration 2.8.8.2.Which statement about the compound PQ is probably correct?
- A.
It will have a low boiling point.
- B.
It will conduct electricity when molten.
- C.
An aqueous solution of the compound will not conduct electricity.
- D.
It will have a giant covalent structure.
- 10.Xenon is in group 0. Which statement about xenon is true?
- A.
Xenon molecules are diatomic
- B.
Xenon supports combustion
- C.
Xenon has two outer electrons
- D.
Xenon is unreactive
- 11.In fleming's left hand rule, if the first finger is pointing at the field and the second finger is pointing at the current, then the thumb is at...?
- A.
Direction of field
- B.
Direction of current
- C.
Direction of electrons
- D.
Direction of resultant force
- 12.What is the shape of the p-orbital?
- A.
Dumb-bell shape
- B.
Pyramid shape
- C.
Spherical shape
- D.
Square shape
- 13.The first period consists of two elements. How many elements does the second period consist of?
- A.
2
- B.
8
- C.
10
- D.
18
- 14.Which of the following are the properties of graphite?
- A.
Hard, high melting point.
- B.
Soft, low melting point
- C.
Soft, high melting point
- D.
Hard, low melting point.
- 15.Potassium and Francium are both in group I of the periodic table. Which one of the following statements is correct?
- A.
Both metals form acidic oxides.
- B.
Francium has more electrons in its outermost shell than potassium.
- C.
Francium has a lower melting point than potassium.
- D.
Francium reacts less quickly with water than potassium.
- 16.Which combination is correct for diamond?
- A.
Covalent bond, 4 atoms joined to each carbon atom
- B.
Ionic bond, 4 atoms joined to each carbon atom
- C.
Covalent, 3 atoms joined to each carbon atom
- D.
Ionic, 3 atoms joined to each carbon atom
- 17.Boron and aluminium are both in group III of the periodic table. Which statement is true for these two elements?
- A.
Both elements are metals
- B.
Both elements contain 3 electrons in the outermost shells.
- C.
Both elements form acidic oxides.
- D.
Both elements have the same proton number.
- 18.Which statement about the change in properties of the elements from left to right across a period is correct?
- A.
The elements change from being metals to non-metals.
- B.
The number of neutrons in an atom decreases.
- C.
The electrical conductivity of the elements increases.
- D.
The number of protons in an atom decreases.
- 19.Allotropes are of...
- A.
The same element and have similar properties
- B.
Different elements but have similar properties
- C.
Different elements and different properties
- D.
The same element but of different properties
- 20.If Fluorine were mixed with Sodium Chloride, what would be the outcome?
- A.
Sodium Fluoride, Sodium Chloride
- B.
Potassium Fluoride and Chlorine
- C.
Sodium Fluoride and Chlorine
- D.
No reaction
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