What three numbers are always the same?

Atomic number, Protons, Electrons

Mass number, Protons , Neutrons

Bohr’s model was based on what?

the emission spectra of hydrogen

Bohr Diagram Quiz Questions And Answers

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Questions: 10 | Attempts: 10,069 | Updated: Aug 18, 2023

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Have you studied about Bohr-Rutherford diagrams of the atoms in your Chemistry textbooks? Can you attempt these Bohr Model quiz questions and answers? Try the quiz and check how good your atomic knowledge is. The Bohr diagram is associated with the Bohr model, which depicts a small and positively charged nucleus surrounded by negatively charged particles that travel in circular orbits around it, similar to the structure of the Solar System. What else do you know about it? Let's check it out with the quiz given below. Good luck!

Questions and Answers

1.

Which one of the following orbits around the nucleus?
- A.
  
  Neutron
- B.
  
  Electron
- C.
  
  Proton
- D.
  
  All of these
Correct Answer
B. Electron

Explanation
Electron is the correct answer because it is a subatomic particle that carries a negative charge and is found in the electron cloud surrounding the nucleus of an atom. Neutrons and protons, on the other hand, are located within the nucleus and do not orbit around it. Therefore, only the electron orbits around the nucleus.

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2.

The atomic mas is which of the following added together?
- A.
  
  Electrons + Neutrons
- B.
  
  Protons + Electrons
- C.
  
  Atomic Number + Protons
- D.
  
  Protons + Neutrons
Correct Answer
D. Protons + Neutrons

Explanation
The atomic mass of an atom is determined by the sum of its protons and neutrons. Protons have a positive charge and are found in the nucleus of an atom, while neutrons have no charge and are also located in the nucleus. Electrons, on the other hand, have a negative charge and are found in the electron cloud surrounding the nucleus. The atomic number represents the number of protons in an atom, but it does not contribute to the atomic mass. Therefore, the correct answer is Protons + Neutrons.

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0
1
3.

An atom which has a charge due to loosing or gaining electrons is called?
- A.
  
  Electron
- B.
  
  Proton
- C.
  
  Nuetron
- D.
  
  Ion
Correct Answer
D. Ion

Explanation
An atom which has a charge due to losing or gaining electrons is called an ion. When an atom gains or loses electrons, it becomes electrically charged and forms an ion. This charge can be positive if the atom loses electrons or negative if the atom gains electrons. Ions play a crucial role in chemical reactions and the formation of compounds.

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5
3
4.

Which two elements are combined in order to make the ionic compound? CaO
- A.
  
  Calcium, Oxygen
- B.
  
  Carbon, Osmium
- C.
  
  Carbon, Oxygen
- D.
  
  Calcium, Osmium
Correct Answer
A. Calcium, Oxygen

Explanation
Calcium and oxygen are combined to form the ionic compound CaO. In an ionic compound, one element donates electrons to another element, resulting in the formation of positively and negatively charged ions. In this case, calcium donates two electrons to oxygen, which accepts them, forming Ca2+ and O2- ions. These ions then attract each other due to their opposite charges, resulting in the formation of the ionic compound CaO.

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5
2
5.

What three numbers are always the same?
- A.
  
  Protons, Nuetrons , Electrons
- B.
  
  Protons, Neutrons, Mass number
- C.
  
  Atomic number, Protons, Electrons
- D.
  
  Mass number, Protons , Neutrons
Correct Answer
C. Atomic number, Protons, Electrons

Explanation
The atomic number represents the number of protons in an atom, which is a fundamental property of an element and remains constant for all atoms of the same element. Protons are positively charged particles found in the nucleus of an atom, and electrons are negatively charged particles that orbit around the nucleus. Therefore, the atomic number, the number of protons, and the number of electrons are always the same for a given element.

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5
1
6.

When the electron is further from the ________ the greater the electrons energy.

Correct Answer
Nucleus, nucleus

Explanation
The closer an electron is to the nucleus, the stronger the attractive force between them, resulting in lower energy levels for the electron. As the electron moves further away from the nucleus, the attractive force weakens, allowing the electron to have higher energy levels. Therefore, when the electron is further from the nucleus, its energy is greater.

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7
4 4
7.

Heat, light or energy can ________ an electron and move it to an orbit further from the nucleus.

Correct Answer
excite, Excite

Explanation
When an electron is excited, it gains energy and moves to an orbit further from the nucleus. This can be achieved by adding heat, light, or any other form of energy to the electron.

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2
4 2
8.

Bohr’s model was based on what?
- A.
  
  The emission spectra of hydrogen
- B.
  
  Dual nature of matter
- C.
  
  Discharging of elements
- D.
  
  All of these
Correct Answer
A. The emission spectra of hydrogen

Explanation
Bohr's model was based on the emission spectra of hydrogen. This means that he studied the specific wavelengths of light emitted by hydrogen atoms when they transitioned from higher energy levels to lower energy levels. By analyzing these spectra, Bohr was able to propose his model of the atom, which included the concept of energy levels and electrons orbiting the nucleus in specific orbits. This model was a significant advancement in understanding atomic structure and laid the foundation for further developments in quantum mechanics.

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9.

If an atom contains exactly 79 protons, then it's an atom of what element?
- A.
  
  Silver
- B.
  
  Gold
- C.
  
  Nitrogen
- D.
  
  Lithium
Correct Answer
B. Gold

Explanation
An atom with exactly 79 protons is an atom of gold. The number of protons in an atom determines its atomic number, which is unique to each element. Gold has an atomic number of 79, so an atom with 79 protons can only be gold.

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10.

What is the maximum number of electrons in the first shell in the Bohr model of the atom?
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
Correct Answer
A. 2

Explanation
According to the Bohr model of the atom, the first shell can hold a maximum of 2 electrons. This is because the first shell has only one subshell, which is the s subshell, and it can accommodate a maximum of 2 electrons.

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Bohr Diagram Quiz Questions And Answers

Which one of the following orbits around the nucleus?

The atomic mas is which of the following added together?

An atom which has a charge due to loosing or gaining electrons is called?

Which two elements are combined in order to make the ionic compound? CaO

What three numbers are always the same?

When the electron is further from the ________ the greater the electrons energy.

Heat, light or energy can ________ an electron and move it to an orbit further from the nucleus.

Bohr’s model was based on what?

If an atom contains exactly 79 protons, then it's an atom of what element?

What is the maximum number of electrons in the first shell in the Bohr model of the atom?