What would be the radius of second orbit of He+ ion?
1.058˚A
3.023˚A
2.068˚A
4.458˚A
A
3.023˚A
B
2.068˚A
C
1.058˚A
D
4.458˚A
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Solution
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Radius of the nth orbit, rn=0.529n2ZAo
For He+ ion, Z=2
Radius of 2nd orbit, r2=0.529222
⟹r2=1.058˚A
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