Question

Which of the following statement is/are correct about Bohr Model? A. Energy level corresponds to shells and subshells. B. The energy of electrons are quantized. C. The electrons far from the nucleus has lowest energy. D. Principal quantum number \((n)\) can have values from 0 to 1. E. The electrons are arranged in a series of energy level.

• A. A and B only
• B. A, B and C only
• C. A, B, C, D and E
• D. A, B and E only

Hint:

In Bohr model, electron energy is quantized and electrons are arranged in fixed energy levels. Higher shells have higher energy.

Answer 1

The Correct Option is D

Concept:
Bohr model explains the arrangement of electrons in atoms in fixed energy levels. According to this model, electrons revolve around the nucleus in definite orbits or shells.

Step 1: Check statement A.
Energy levels are related to shells. In atomic structure, shells and subshells describe electron arrangement. \[ A \text{ is correct} \]

Step 2: Check statement B.
According to Bohr model, electrons can have only certain fixed energies. This means energy is quantized. \[ B \text{ is correct} \]

Step 3: Check statement C.
Electrons farther from the nucleus have higher energy, not lower energy. Therefore, this statement is wrong. \[ C \text{ is incorrect} \]

Step 4: Check statement D.
Principal quantum number \(n\) cannot have values from 0 to 1 only. It has positive integral values: \[ n = 1, 2, 3, 4, \ldots \] So statement D is incorrect. \[ D \text{ is incorrect} \]

Step 5: Check statement E.
Electrons are arranged in a series of energy levels around the nucleus. \[ E \text{ is correct} \] Therefore, the correct statements are: \[ A, B \text{ and } E \] \[ \therefore \text{Correct Answer is (D)} \]