SATHEE: Co-Ordination Compounds Question 149

Co-Ordination Compounds Question 149

Question: How many unpaired electrons are present in the central metal ion of ${[C o C l_{4}]}^{2 -}$

[Orissa JEE 2005]

Options:

A) 3

B) 4

C) 5

D) 2

Show Answer

Answer:

Correct Answer: A

Solution:

$_{27} C o \to [A r] 3 d^{7} 4 s^{2}$

$C o^{2 +} \to 3 d^{7} 4 s^{0}$ Number of unpaired electrons = 3.

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Co-Ordination Compounds Question 149

Question: How many unpaired electrons are present in the central metal ion of [CoCl4]2−

Options:

Answer:

Solution:

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Question: How many unpaired electrons are present in the central metal ion of ${[C o C l_{4}]}^{2 -}$