WBJEE · Chemistry · Classification of Elements and Periodicity in Properties
Which one of the following has the lowest ionization energy?
- A \(1 s^2 2 s^2 2 p^6\)
- B \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^1\)
- C \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^5\)
- D \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^3\)
Answer & Solution
Correct Answer
(B) \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^1\)
Step-by-step Solution
Detailed explanation
Hints: It's an alkalimetal; hence least I.P
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