Match the properties given in Colunmn I with the emtals given in Column II.
`{:(,"Column I (Property)",,"Column II ( Metal)"),((i),"Element with higher second ionisation enthalpy ",(a),Co),((ii) ,"Element with highest third ionisation enthalpy",(b),Cr),((iii),"M in "M(CO)_(6)"is",(c ) ,Cu),((iv),"Element with highest heat of atomisation",(d ),Zn),(,,(e ),Ni):}`

Explanation

To solve the problem of matching the properties in Column I with the metals in Column II, we will analyze each property one by one.

### Step-by-Step Solution:

1. **Element with higher second ionisation enthalpy**:
- To find the element with the highest second ionisation enthalpy, we need to consider the electronic configurations of the metals.
- Copper (Cu) has the electronic configuration of [Ar] 3d10 4s1. After removing one electron, the configuration becomes [Ar] 3d10. Removing a second electron from a fully filled 3d subshell is energetically unfavorable, leading to a high second ionisation enthalpy.
- **Match**: (i) → (c) Cu

2. **Element with highest third ionisation enthalpy**:
- For the highest third ionisation enthalpy, we look at Zinc (Zn) which has the configuration [Ar] 3d10 4s2. After removing two electrons, the configuration is again [Ar] 3d10. Removing a third electron from a fully filled 3d subshell is also unfavorable, resulting in a high third ionisation enthalpy.
- **Match**: (ii) → (d) Zn

3. **M in M(CO)6 is**:
- In the complex M(CO)6, we need to identify the metal that forms a stable carbonyl complex. Among the given options, Chromium (Cr) is known to form stable carbonyl complexes.
- **Match**: (iii) → (b) Cr

4. **Element with highest heat of atomisation**:
- The heat of atomisation generally increases with the number of unpaired electrons and the strength of metallic bonds. Nickel (Ni) is known to have a relatively high heat of atomisation among the given metals.
- **Match**: (iv) → (e) Ni

### Final Matches:
- (i) → (c) Cu
- (ii) → (d) Zn
- (iii) → (b) Cr
- (iv) → (e) Ni