AP EAMCET · Chemistry · d and f Block Elements
Which of the following atoms, in its ground state has the highest number of unpaired electrons?
- A Chromium \([Z=24]\)
- B Iron \([Z=26]\)
- C Manganese \([Z=25]\)
- D Vanadium \([Z=23]\)
Answer & Solution
Correct Answer
(A) Chromium \([Z=24]\)
Step-by-step Solution
Detailed explanation
(a) Chromium ( \(Z=24\) ) Electronic configuration \((\mathrm{EC})=[\mathrm{Ar}] 3 d^5 4 s^1\) Number of unpaired electrons in \(\mathrm{Cr}=6\) (b) Iron \((Z=26)\)\(\mathrm{EC}=[\mathrm{Ar}] 3 d^6 4 s^2\) (c) Manganese \((Z=25)\)\(\mathrm{EC}=[\mathrm{Ar}] 3 d^5 4 s^2\) d)…
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