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Bohr's Model

Total questions: 9

Worksheet time: 3mins

Name
Class
Date
1.

Niels Bohr proposed a model of the atom in which the ______ was able to occupy only certain orbits around the nucleus

a)

Protons

b)

Electrons

c)

Neutrons

d)

Cations

2.

This model was based on which theory?

a)

Avogadro's Law

b)

Bell's Theorem

c)

M- Theory

d)

Quantum Theory

3.

The orbits or shell are represented by ____ or _____

a)

N and 1

b)

Letters and Numbers

c)

Shells and Numbers

4.

The mass of an atom is therefore given by the sum of the masses of ____ and _____ present in the nucleus

a)

Electrons and Neutrons

b)

Protons and Electrons

c)

Protons and Neutrons

d)

None of them

5.

Which symbols are used to represent different Bohr’s orbits?

a)

A,N,M,K

b)

K,L,M,N

c)

L,M,N,O

d)

K,L,N,O

6.

What are not accommodated in the given shell ,unless the inner shells are filled in a step wise manner

a)

Protons

b)

Electrons

c)

Neutrons

d)

All of the above

7.

What is the maximum number of electrons that can be accommodated in the outermost orbit

a)

9

b)

7

c)

8

d)

6

8.

While revolving in discrete orbits the electrons do not radiate energy.

a)

True

b)

False

9.

Which of these are true.

a)

Each orbit is associated with a fixed amount of energy. The lowest energy level of the electron is called the ground state.  Therefore, these orbits are also known as energy levels or energy shells.

b)

The nucleus contains all the protons and neutrons of the atom.

c)

The atom consists of a small positively charged nucleus at its center and surrounded by negatively charged electrons in a definite circular path.

d)

All of the Above