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the metal ions having 3d^2 configuration...

the metal ions having `3d^2` configuration is/are(Ti=22, V=23, Cr=24, Mn=25) a.`Ti^(2+)`, b.`V^(3+)`, c.`Cr^(3+)`, d.`Mn^(4+)`

A

Both a &b

B

b only

C

a only

D

Both b &c

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