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Questions  

What would be the radius of second orbit of He+ ion?

a
1.058 A°
b
3.023 A°
c
2.068 A°
d
4.458 A°

detailed solution

Correct option is A

r=r0n2ZAo=0.529 x 222=0.529 x 2=1.058 Ao

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If speed of electron in the ground state of hydrogen atom is 2.2×106m/s, which of the following cannot be the speed of electron in any orbit of He+ ion?


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