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  • Electronic configuration of calcium atom may be written as  Option: 1 <img alt="[\mathrm{N} e] 4 \mathrm{p}^2" src="https://entrancecorne

Electronic configuration of calcium atom may be written as
 

Option: 1

[\mathrm{N} e] 4 \mathrm{p}^2
 


Option: 2

[\mathrm{Ar}] 4 \mathrm{s}^2
 


Option: 3

[\mathrm{Ne}] 4 \mathrm{~s}^2


Option: 4

\mathrm{[\mathrm{Ne}] 4 p^3}


Answers (1)

best_answer

\mathrm{_{20}{\mathrm{Ca}} \longrightarrow 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^2 }

\mathrm{_{18}{\mathrm{Ar}} \longrightarrow 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 }

Hence, \mathrm{{ }_{20} C_a \rightarrow[\operatorname{Ar}] 4 \mathrm{~s}^2}

Hence option 2 is correct.

Posted by

Ritika Harsh

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