MCQ
Which electron transition in a hydrogen atom requires the largest amount of energy :
- ✓From $n = 1$ to $n = 2$
- BFrom $n = 2$ to $n = 3$
- CFrom $n = \infty$ to $n = 1$
- DFrom $n = 3$ to $n = 5$
✓
Answer
Correct option: A.
From $n = 1$ to $n = 2$
a
The electron transition from $n=1$ to $n=2$ in hydrogen atom will require largest amount of energy.
The electron transition from $n=1$ to $n=2$ in hydrogen atom will require largest amount of energy.
The amount of energy is directly proportional to
$\left[\frac{1}{ n _1^2}-\frac{1}{ n _2^2}\right]$
This difference is maximum for the electron transition from $n=1$ to $n=2$
$\left[\frac{1}{1^2}-\frac{1}{2^2}\right]=0.75$
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