Question

Write the electronic configuration of the following
elements and predict the block, period and group to
which each element belongs.
(i) A (Z = 17)
(ii) D (Z = 26)
(iii) E (Z = 47)
(iv) G (Z = 55)
(v) J (Z = 82)​

Answer 1

Explanation:

1. A (z) = 17 electronic configuration = 2,8,7 - chlorine

belongs in p-block,2 period,17 group.

2. D (z)=26 electronic

configuration = 2,8,8,8 - Fe (iron, ferrous). belongs in d- block , 4th period and 8 th group.

3. E. (z) 47 E.C. = 2,8, 8,18 ,10 - Pd (platinum) belongs to d- block , 5th period, 10th group.

4. G. (z) 55 e. c. = 2,8,8,18 ,18,1 -Cs (cesium) belongs to 6 the period , and 1st group.

5. J. ( z) 82 e . c. = 2,8,8,18,18,28 Pb . belongs to 6th period and 14 group.