MHT CET · Chemistry · Classification of Elements and Periodicity in Properties
What is the electronic configuration of third element of group-2 in periodic table?
- A \([\mathrm{Ne}] 3 \mathrm{~S}^{1}\)
- B \([\mathrm{Ne}] 3 \mathrm{~S}^{2}\)
- C \([\mathrm{Ar}] 4 \mathrm{~S}^{1}\)
- D \([\mathrm{Ar}] 4 \mathrm{~S}^{2}\)
Answer & Solution
Correct Answer
(D) \([\mathrm{Ar}] 4 \mathrm{~S}^{2}\)
Step-by-step Solution
Detailed explanation
Third element of group 2 is calcium- Ca. atomic number 20 electronic configuration: [Ar] 4s2
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