12. Out of Cr+2 and Cr+3,which one is stable in aqueous solution?

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Which one of the following ions is the most stable in aqueous solution?
(Atomic number. Ti = 22, V = 23, Cr = 24, Mn = 25)

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?

Q. Assertion :The number of unpaired electrons in the following gaseous ions:

M n^{3 +}, C r^{3 +}, V^{3 +}

and

T i^{3 +}

are 4, 3, 2 and 1 respectively. Reason: Among these Cr

^{3 +}

is most stable in aqueous solution.

Q. Which one of the following ions is the most stable in aqueous solution?

[At. no.; Ti = 22, V - 23, Cr = 24; Mn = 25]

Which is more stable in the below given pair?

C r^{2 +}

_____

C r^{3 +}

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