AP EAMCET · Chemistry · Structure of Atom
The electronic configuration of \(\mathrm{Cs}\) is
- A \([\mathrm{Kr}] 5 \mathrm{~s}^1\)
- B \([\mathrm{Xe}] 6 \mathrm{~s}^1\)
- C \([\mathrm{Rn}] 7 \mathrm{~s}^1\)
- D \([\mathrm{Ar}] 4 \mathrm{~s}^1\)
Answer & Solution
Correct Answer
(B) \([\mathrm{Xe}] 6 \mathrm{~s}^1\)
Step-by-step Solution
Detailed explanation
Caesium atomic number is 55. Thus, electron configuration of caesium is \(1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^2 3 d^{10} 4 p^6 5 s^2 4 d^{10} 5 p^6 6 s^1\) or [Xe] \(6 s^1\). Hence, correct option is (b).
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