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The d-and f-Block Elements
calculate the number of unpaired electrons in the...

Question:
Calculate the number of unpaired electrons in the following gaseous ions: Mn³⁺, Cr³⁺, V³⁺ and Ti³⁺. Which one of these is the most stable in aqueous solution?

Answer:

Gaseous ions Number of unpaired electrons

(i) Mn³⁺ , [Ar] 3d⁴ 4

(ii) Cr³⁺ , [Ar] 3d³ 3

(iii) V³⁺ , [Ar] 3d² 2

(iv) Ti³⁺ , [Ar] 3d¹ 1

Cr³⁺ is the most stable in aqueous solutions owing to a t³_2g configuration.

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Question:
Calculate the number of unpaired electrons in the following gaseous ions: Mn³⁺, Cr³⁺, V³⁺ and Ti³⁺. Which one of these is the most stable in aqueous solution?

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	Gaseous ions	Number of unpaired electrons
(i)	Mn³⁺ , [Ar] 3d⁴	4
(ii)	Cr³⁺ , [Ar] 3d³	3
(iii)	V³⁺ , [Ar] 3d²	2
(iv)	Ti³⁺ , [Ar] 3d¹	1

Question: Calculate the number of unpaired electrons in the following gaseous ions: Mn3+, Cr3+, V3+ and Ti3+. Which one of these is the most stable in aqueous solution?

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Question:
Calculate the number of unpaired electrons in the following gaseous ions: Mn³⁺, Cr³⁺, V³⁺ and Ti³⁺. Which one of these is the most stable in aqueous solution?