The number of 3d electrons in the Cr³⁺ ions will be:

1.	5	2.	6
3.	3	4.	7

The correct statement regarding the element silver(Ag) is: 

The enthalpy of atomization of transition metals is high due to :

1. High effective nuclear charge

2. A large number of valence electrons

3. Very strong metallic bonds

4. All of the above

The transition metals generally form coloured compounds due to :

Match the following : 

Transition metals and their many compounds act as good catalysts due to :

Transition metals show paramagnetic behaviour due to:
1. Paired electrons in the (n-1) d-orbitals
2. Unpaired electrons in the (n-1) d-orbitals
3. Due to \(d^{10},\) and \(d^{0}\) configuration
4. None of the above

Correct statements amongst the above are:

The correct statement(s) about interstitial compounds is/are:

The spin-only magnetic moment of ${\mathrm{Ce}}^{3+}$ is:
1. 3.25
2. 1.73
3. zero
4. 4.21