MCQ
The electronic configuration of $Pt$ (atomic number $78)$ is $...$
- ✓$[ Xe ]\,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}$
- 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
Correct option: A.
$[ Xe ]\,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}$
a
${ }_{78} Pt =[ Xe ] \,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}$ (Exceptional electronic configuration)
${ }_{78} Pt =[ Xe ] \,4 f ^{14} \,5 d ^{9}\, 6 s ^{1}$ (Exceptional electronic configuration)
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