What is the electron configuration of the iodide ion? A. 1s22s22p63s23p63d104s24p64d105s2
B. 1s22s22p63s23p63d104s24p6
C. 1s22s22p63s23p63d104s24p64d10
D. 1s22s22p63s23p63d104s24p64d105s25p6

Please try and put the answer first and then give an explanation.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally