First slide

Hydrogen -like ion

Question

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

Easy

A

1.058 A°
B

3.023 A°
C

2.068 A°
D

4.458 A°

Solution

$r = r_{0} \frac{n^{2}}{Z} A^{o} = 0.529 x \frac{2^{2}}{2} = 0.529 x 2 = 1.058 A^{o}$

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