MCQ
For $d-$ block elements the first ionization potential is of the order
- ✓$Zn > Fe > Cu > Cr$
- B$Sc = Ti < V = Cr$
- C$Zn < Cu < Ni < Co$
- D$V > Cr > Mn > Fe$
✓
Answer
Correct option: A.
$Zn > Fe > Cu > Cr$
a
The ionisation enegies increase with increase in atomic number. However, the tread is irregular among some $d-$ block element. on the basis of electronic configuration , the
The ionisation enegies increase with increase in atomic number. However, the tread is irregular among some $d-$ block element. on the basis of electronic configuration , the
$Zn\,:\,1{s^2}\,2{s^2}\,{p^6}\,3{s^2}\,{p^6}\,{d^{10}}\,4{s^2}$
$Fe\,:\,1{s^2}\,2{s^2}\,{p^6}\,3{s^2}\,{p^6}\,{d^6}\,4{s^2}$
$Cu\,:\,1{s^2}\,2{s^2}\,{p^6}\,3{s^2}\,{p^6}\,{d^{10}}\,4{s^1}$
$Cr\,:\,1{s^2}\,2{s^2}\,{p^6}\,3{s^2}\,{p^6}\,{d^5}\,4{s^1}$
$IE_1$ follows the order $:\,Zn > Fe > Cu > Cr$
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