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Radius of the first excited state of Helium ion is given as : \({a}_{0}\to\) radius of first stationary state of hydroge…

Q1

Radius of the first excited state of Helium ion is given as : \({a}_{0}\to\) radius of first stationary state of hydrogen atom

[JEE Main 2025, 22 Jan (Shift 1)]

a

\(r=2{a}_{0}\)

b

\(r=4{a}_{0}\)

c

\(r=\frac{{a}_{0}}{2}\)

d

\(r=\frac{{a}_{0}}{4}\)

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