JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
The electronic configuration of \(Pt\) (atomic number \(78)\) is \(...\)
- A \([ Xe ]\,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}\)
- B \([ Kr ]\, 4 f ^{14} \,5 d ^{10}\)
- C \([ Xe ] \,4 f ^{14}\, 5 d ^{10}\)
- D \([ Xe ] \,4 f ^{14}\, 5 d ^{8} \,6 s ^{2}\)
Answer & Solution
Correct Answer
(A) \([ Xe ]\,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}\)
Step-by-step Solution
Detailed explanation
\({ }_{78} Pt =[ Xe ] \,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}\) (Exceptional electronic configuration)
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