Question

if the radius of second orbit of li2+ ion is x , find the radius of 1st orbit of he+ ion in terms of x.​

Answer 1

Answer:

Radius directly proportional to z/n, where z is no. of protons and n is the orbital number.

So, if radius of second orbit of Li^+2 is X

Then, for 1st orbit of He^+ = X(2/3)× 2 = 4X/3

hope this will help you

Answer 2

Answer:

r Li^+² = 0.53 × 4/3 Å (= x)

------------------------------------

r He^+ = 0.53 × ½ Å

r Li^+²          8                                  3                                 3x

----------  =  --------    ;    r He^+  =   --------   ×  r Li^+²  =    -----------

r He^+          3                                  8                                  8

      Answer:  3x/8