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Asked by ubedullah | 17th Oct, 2009, 03:10: PM

Expert Answer:

K has the larger size because the number of protons in K and K+ is the same but the number of electrons in K+ is 18 whereas in K it is 19. So, the proton to electron ratio is more in K+ and hence it has a smaller size.

Br- has a larger size because the number of protons in Br and Br- is the same but the number of electrons in Br is 35 whereas in Br- it is 36.

 

Answered by  | 20th Oct, 2009, 10:24: AM

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