The number of unpaired electrons in Fe3+ is

Question

The number of unpaired electrons in Fe3+ is (A) 2 (B) 3 (C) 4 (D) 5

Tardigrade Admin · Accepted Answer

The atomic number of Fe is 26 and its electronic configuration is [ Ar ] 4 s 2 3 d 6. Thus, the electronic configuration of Fe 3+ is [ Ar ] 3 d 5. Hence, it has 5 unpaired electrons in the d subshell.

Q. The number of unpaired electrons in $F e^{3 +}$ is

2

3

4

5

The atomic number of $F e$ is 26 and its electronic configuration is $[A r] 4 s^{2} 3 d^{6}$ . Thus, the electronic configuration of $F e^{3 +}$ is $[A r] 3 d^{5}$ .
Hence, it has 5 unpaired electrons in the d subshell.

Q. The number of unpaired electrons in Fe3+ is

2

3

4

5

The atomic number of Fe is 26 and its electronic configuration is [Ar]4s23d6. Thus, the electronic configuration of Fe3+ is [Ar]3d5. Hence, it has 5 unpaired electrons in the d subshell.

Q. The number of unpaired electrons in $F e^{3 +}$ is

The atomic number of $F e$ is 26 and its electronic configuration is $[A r] 4 s^{2} 3 d^{6}$ . Thus, the electronic configuration of $F e^{3 +}$ is $[A r] 3 d^{5}$ .
Hence, it has 5 unpaired electrons in the d subshell.