【 】1s2 2s2 2p6 3s2 3p6 ||What element is 1s2 2s2 2p6 3s2 3p6 ? ||What element has the electron configuration of 1s2 2s2 2p6 3s2 3p6?

What is 1s2 2s2 2p6 3s2 3p6 ?

Answer:

1s2 2s2 2p6 3s2 3p6 means that 

●s subshell of first orbit or energy level has two electrons,

●s subshell of second orbit or energy level has two electrons,  

●p subshell of second orbit or energy level has six electrons,

●s subshell of third orbit or energy level has two electrons, 

● and p subshell of third orbit or energy level has six electrons.





From 1s2 2s2 2p6 3s2 3p6 electron configuration,we get 2+2+6+2 + 6 = 18 electrons.


We know that electron's number is equal to proton number or atomic number for neutral atom.Since here there is no words about charge,we can say that 1s2 2s2 2p6 3s2 3p6 indicates the element whose atomic number is 18.


Now if you look at the periodic table,Ar has atomic number 18.So

1s2 2s2 2p6 3s2 3p6 is electron configuration of Argon(Ar).

 

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