Question

Find the total number of unpaired electrons in t2g orbital of central atom is ( cof6)3_

Answer 1

Answer:

4 unpaired electron

Explanation:

Answer 2

The number of unpaired electrons in t2g of cobalt hexafluoride is 2.

Explanation:

• The atomic number of Co (cobalt) is 27 and its electronic configuration (E.C) is $[Ar]3d^{7}4s^{2}$.
• Its oxidation state (O.S) in $[CoF_{6}]^{3-}$ is:

        x+(-1)(6) = -3  ⇒   x - 6= -3     ⇒   x = -3 + 6    ⇒   x = 3

• The cobalt is represented as $Co^{+3}$ and its E.C is $[Ar]3d^{6}$.
• Cobalt hexafluoride is a weak field, so first 3 electrons will go in t2g, and 2 in eg. Then the remaining one goes to t2g. It can be written as $t_{2}g^{4}eg^{2}$.
• It has 2 unpaired electrons in t2g.