MCQ
The radius of electron in the first excited state of hydrogen atom is
- A${a_0}$
- ✓$4{a_0}$
- C$2{a_0}$
- D$8{a_0}$
✓
Answer
Correct option: B.
$4{a_0}$
b
(b) $r \propto {n^2}$ (excited state $n = 2$)
(b) $r \propto {n^2}$ (excited state $n = 2$)
$r = 4{a_0}$
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