Question

If radius of ground state of he+ is X cm. The radius of second excited statte of Li2+​

Answer 1

Correct option is A)

Radius of an orbit =0.529×Zn2

R∝Z1

R2R1=Z1Z2

R2x=23

R2=32x

Hence, option A is correct.

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Answer 2

Answer:

2nd excited state means electron is present in 3rd shell.

so,r3 = 0.529 x (3x3/3) = 0.529 x 3A = 1.587A.

A is angstromes .

Hope it will helps you !!!!!!