Predict which of the following will be coloured in aqueous solution- Ti 3- V 3- Cu - Sc 3- Mn 2- Fe 3- and Co 2- Give reasons for each-

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Predict which...

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Predict which of the following will be coloured in aqueous solution? Ti³⁺, V³⁺,

Cu⁺, Sc³⁺, Mn²⁺, Fe³⁺ and Co²⁺. Give reasons for each.

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T i^{3 +}, V^{3 +}

C u^{+}, S c^{3 +}

F e^{2 +}, F e^{3 +}

C o^{2} +, N i^{2 +}

Z n^{2 +}, A g^{+}

S c^{3 +}

T i^{3 +}

E^{\circ}

M n^{3 +} / M n^{2 +}

F e^{3 +} / F e^{2 +} .

S c^{3 +}

T i^{3 +}

T i^{3 +}, V^{3 +} (i i) C u^{+}, S c^{3 +} (i i i) F e^{2 +}, F e^{3 +} (i v) C o^{2 +}, N i^{2 +} (v) Z n^{2 +}, A g^{+}

$(i) T i^{3 +}, V^{3 +} (i i) C u^{+}, S c^{3 +} (i i i) F e^{2 +}, F e^{3 +} (i v) C o^{2 +}, N i^{2 +} (v) Z n^{2 +}, A g^{+}$

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Element	Atomic Number	Ionic State	Electronic configuration in ionic state
Ti	22	T1³⁺	[Ar] 3d¹
V	23	V³⁺	[Ar] 3d²
Cu	29	Cu⁺	[Ar] 3d¹⁰
Sc	21	Sc³⁺	[Ar]
Mn	25	Mn²⁺	[Ar] 3d⁵
Fe	26	Fe³⁺	[Ar] 3d⁵
Co	27	Co²⁺	[Ar] 3d⁷