On going through the modern periodic table, it is seen that the elements Li, Be, B, C, N, O, F and Ne belong to the period 2. Write down electronic configuration of all of them.

Explanation

Electronic configuration of the elements :
`{:(Li,Be,B,C,N,O,F,Ne),("2,1","2,2","2,3","2,4","2,5","2,6","2,7","2,8"):}`