1.

Identify the oxidation states of titanium (Z=22) and copper (Z=29) in their colourless compounds.

Answer»

`Ti^(3+), CU^(2+)`
`Ti^(2+), Cu^(2+)`
`Ti^(4+), Cu^(1+)`
`Ti^(4+), Cu^(2+)`

Solution :`Ti : [AR] 4S^(2) 3d^(2), Cu:[Ar] 4s^(1) 3d^(10)`
`Ti^(+4):[Ar] 4s^(0) 3d^(0), Cu^(+1): [Ar] 4s^(0) 3d^(10)`


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