Question

Calculate radius ratio for 2nd orbit of He+ ion & 3rd orbit of Be 3+ ion.​

Answer 1

Answer:

4/9

Explanation:use formula 0.529n2/z n:orbit number z:atomic number

Answer 2

Answer:

9/2

Explanation:

Formula for finding radius:  0.529 x n²/ Z

where, n = orbit number

           Z = atomic number = Number of protons

Ex:  for He+ , Z = 2 - 1 = 1

      for Be3+ , Z = 5 - 3  = 2

To find:- Radius of 2nd orbit of He+: Radius of 3rd orbit of Be3+

     =>     0.529 x 2²/ 1    :   0.529 x 3²/ 2

    =>                  4 : 9/2

    =>              Multiply by 2 on both sides,

   =>     8  : 9

Hence the ratio is 8:9

Thanks!