Question

Principal quantum number if he+? Calculate the radius of fourth orbit in he+ atom​

Answer 1

Explanation:

n=1 principal quantum no.

r = 0.529 (n/z)2

r = 2.116 A

Answer 2

Answer:

Principle quantum number: 1  (1s¹ - ns¹ )

Radius of orbit = (0.529 × n²/Z)  A° units

 

Here, given n = 4, Z = 2

Substituting those values in above formula,

R = 0.529 x 4² /2

    = 0.529 x 8

    =  4.232 A°

Hence , the radius is 4.232 A°

Hope it helps you...