AP EAMCET · Chemistry · d and f Block Elements
Which element of the \(3 d\)-series has highest third ionisation enthalpy?
- A \(\mathrm{Mn}\)
- B \(\mathrm{Zn}\)
- C \(\mathrm{Fe}\)
- D \(\mathrm{Cu}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{Zn}\)
Step-by-step Solution
Detailed explanation
The electronic configuration of zinc metal is \(\mathrm{Zn} \Rightarrow[\mathrm{Ar}] 3 d^{10}, 4 s^2\) The third ionisation enthalpy of \(\mathrm{Zn}\) means removal of electron from the stable configuration of \(3 d^{10}\). The metal having the highest third ionisation enthalpy…
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