Chemistry-Bohr's Model
NEET Chemistry Bohr's Model MCQ Question
Type: MCQ-numerical-Hard-Class 11
For a hydrogen atom, if the energy associated with the first orbit is -2.18 × 10^-18 J, what is the energy of the electron in the third orbit?
A
-2.42 × 10^-19 J
B
-7.24 × 10^-19 J
C
-9.69 × 10^-20 J
D
-1.21 × 10^-19 J
Correct Answer
Option A
Detailed Explanation
The energy of an electron in the nth orbit can be calculated using the formula E_n = -2.18 × 10^-18 J/n^2. For n = 3, E_3 = -2.18 × 10^-18 J/9 = -2.42 × 10^-19 J.
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