question_answer

The electronic configuration of \[Mg\] \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}\]. The number of proton is:

A)  \[12\]                                  

B)         \[10\]   

C)         \[2\]                                    

D)         \[6\]