gneet

Study Companion

For more NEET and AIIMS mcq on Structure of Atom Visit www.gneet.com
Question
Q416) Consider the following ions
1. Ni2+ 2. Co2+ 3. Cr2+ 4. Fe3+
Atomic number Cr=24, Fe - 16, Co=27, Ni=28
The correct sequence of the increasing order of the number of unpaired electrons is ....



SOLUTION

Un paired electrons in
Ni2+=2
Co2+=3
Cr2+=4
Fe3+=5

Answer: (a)