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Question No. 3
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How many 'd'electrons are present in Cr2+ ion?​

Answer 1

Answer:

Cr (z= 24) [Ar]18 4s2 3d4 (this is expected)

this is [Ar]18 4s1 3d5. (this is actual)

SO, Cr^2+ is

[Ar]18 4s03d4

Hence

no.of d- electrons = 4

Answer 2

$\huge\fbox\orange{Hi\:Mate}$

Question

How many 'd'electrons are present in Cr2+ ion?

Answer

4 electrons is your answer

Reason

◇Cr atomic number is 24 (contains 24 electrons)

◇Cr+2 means 2 electrons are lost so totally 22 electrons are there.

◇Hence the configaration is 1s2 2s2 2p6 3s2 3p6 3d4,so d orbital contains 4 electrons.

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