Question

velodry If anelectron in onth chell
of the H-like arom is
[
left(2 cdot 18 times 10^{6}right) times frac{2}{87} mathrm{m} / mathrm{sec}
]
purting ( z=3 ) and ( n^{2}=3 )
oprion (1) is correet

# clocity of electron in 3rd shell of Li+2 is ( c v (0) 137 (2) zac (3) 1370 (4) 3x137°

Solution