Question

Write the electronic configuration of the elements with the following atomic number 18,14,29

Answer 1

                    k         l        m     n
18                2        8       8
14               2         8       4
29              2          8       17      2

29 IS COPPER WHICH IS A  TRANSITION ELEMENT WHICH PENULTIMATE
SHELL I S NOT COMPLETELY FILLED

Answer 2

electronic configuration of the element with atomic number:-18(argon)

1s2,2s2,2p63s2,3p6

14:- 1s2,2s2,2p6,3s2,,3p2

29:-1s2,2s2,2p6,3s2,3p6,4s2,3d9