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Question: Which group contains colured ions out of the following? 1\. \(Cu^{+}\) 2. \(Ti^{4 +}\) 3. \(Co^{2 +...

Which group contains colured ions out of the following?

1. Cu+Cu^{+} 2. Ti4+Ti^{4 +} 3. Co2+Co^{2 +} 4. Fe2+Fe^{2 +}

A

1, 2, 3,4

B

3, 4

C

2, 3

D

1, 2

Answer

3, 4

Explanation

Solution

Colour of transition elements are due to presence of unpaired electrons.