MCQ
The most probable radius (in pm) for finding the electron in $H{e^ + }$ is
- A$0.0$
- B$52.9$
- ✓$26.5$
- D$105.8$
✓
Answer
Correct option: C.
$26.5$
c
(c) Most probable radius $= a_0 / Z$
(c) Most probable radius $= a_0 / Z$
where $a_0 = 52.9\, pm. $ For helium ion, $Z = 2.$
$rmp = $ $\frac{{52.9}}{2}$ $= 26.45\, pm.$
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