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Q.

The number of d-electrons in Fe2+(Z=26) is not equal to the number of electrons in which one of the following

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a

p - electrons in Cl(Z=17)

b

d-electrons in Fe(Z=26)

c

p - electrons in Ne(Z=10)

d

s-electrons in Mg(Z=12)

answer is A.

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Detailed Solution

Fe+2=3d64s0 six d electrons p-electrons in chlorine 1s22s22p63s23p5 are =11 as p-electrons =6+5=11
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