Question

Give Up? O Hint 1813/2200 Resources Enter the number of electrons in each energy level (shell) for each of the elements. If the energy level does not contain any electrons, enter a 0. It may help to refer to the periodic table. Hе: n12 n2 0 n3 0 n=4 Be: n1 n2 2

Answer 1

→ He (no. of é =2) hence, electronic configuratn is 15² then, n=1, no. of e = 2 n=2, no ofe- o n=3, no oft=0 nu no ofe - 0 s Be & then, Lno. of é = 4). configuration = 15² 26² n=1, no of e = 2 n=2, no. of é =2 → pair I As, P non-metal, having 3 e in this same properties. both care of gp 15 element and walance & orbital so have pair? - Me, Ar both are noble gases Pair 3 Li, k both are metals