Question
Answer the questions based on Modern Periodic table.
(i) On going through the Modern Periodic table (fig 2.1) it is seen that the elements Li, Be, B, C, N, O, F and Ne belong to the period-2. Write down the electronic configuration.
(ii) Is the number of valence electrons same for all these elements?
(iii) Is the number of shell the same in these ?
(i) On going through the Modern Periodic table (fig 2.1) it is seen that the elements Li, Be, B, C, N, O, F and Ne belong to the period-2. Write down the electronic configuration.
(ii) Is the number of valence electrons same for all these elements?
(iii) Is the number of shell the same in these ?
