Question

What is the ratio of radius of ‘K’ orbit in H atom to the radius of ‘M’-orbit of Li

Answer 1

Answer:

 1st orbit of H atomOption 1

 1st orbit of H atomOption 1n=2, Li2+ Option 2

 1st orbit of H atomOption 1n=2, Li2+ Option 2n=2, Be3+Option 3

 1st orbit of H atomOption 1n=2, Li2+ Option 2n=2, Be3+Option 3n=2, He+Option 4

 1st orbit of H atomOption 1n=2, Li2+ Option 2n=2, Be3+Option 3n=2, He+Option 4n=3, Li2+n =12223Z = 13423n2/Z  12/1 = 122/3 = 4/322/4 = 122/2 = 232/3 = 3

 1st orbit of H atomOption 1n=2, Li2+ Option 2n=2, Be3+Option 3n=2, He+Option 4n=3, Li2+n =12223Z = 13423n2/Z  12/1 = 122/3 = 4/322/4 = 122/2 = 232/3 = 3Conclusion:

 1st orbit of H atomOption 1n=2, Li2+ Option 2n=2, Be3+Option 3n=2, He+Option 4n=3, Li2+n =12223Z = 13423n2/Z  12/1 = 122/3 = 4/322/4 = 122/2 = 232/3 = 3Conclusion:Since the n2/Z values are same for second orbit of Be3+ and first orbit of H, their radii are also equal. Answer is option 2.

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