Question

The number of d-electrons in $F{e}^{2+}$ (Z = 26) is not equal to that of:

• A. p-electrons in Ne (Z = 10)
• B. s-electrons in Mg (Z = 12)
• C. d-electrons in Fe (Z = 26)
• D. p-electrons in Cl (Z = 17)

Answer 1

The correct option is D

p-electrons in Cl (Z = 17)

Number of d electrons in $F{e}^{2+}$ is 6

Whereas number of p-electrons in Cl is 11.