【 】 1s2 2s2 2p6 3s2 3p3 ||What element has the electron configuration of 1s2 2s2 2p6 3s2 3p3 ?

 What is 1s2 2s2 2p6 3s2 3p3 ?

Answer:

1s2 2s2 2p6 3s2 3p3 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 three electrons.





From 1s2 2s2 2p6 3s2 3p3 electron configuration,we get 2+2+6+2 + 3 = 15 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 3p3 indicates the element whose atomic number is 15.


Now if you look at the periodic table,P (Phosphorus) has atomic number 15.

So 1s2 2s2 2p6 3s2 3p3 is electron configuration of Phosphorus(P).

 

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