Atomic Structure Question 335

Question: The number of unpaired electrons in a chromic ion $ C{r^{3+}} $ (atomic number = 24) is [MNR 1986; CPMT 1992]

Options:

A) 6

B) 4

C) 3

D) 1

Show Answer

Answer:

Correct Answer: C

Solution:

$ Cr_{24}=(Ar),3d^{5},4s^{1} $ but $ Cr_24^{3+}=(Ar),3d^{3},4s^{0} $



NCERT Chapter Video Solution

Dual Pane