Question

element A has subshell electronic configuration 1s2 2s2 2p2 element B is 1s2 2s2 2p4 element c is 1s2 2s2 2p6 3s1 and element d is 1s2 2s2 2p6 symbols are not real. which element has highest metallic character?​

Answer 1

Answer:

good evening how are you

Answer 2

Explanation:

a) The correct electronic configuration of element A is:

1s22s22p63s23p64s1

(b) Fourth period.

(c) The electronic configuration of element A is

1s22s22p63s23p64s1

The electronic configuration of element C is

1s22s22p63s1

From the electronic configuration of the elements A and C, the atomic size of A is greater than the atomic size of C. Hence, the distance between the outermost electron of element A and its nucleus is more than the distance between the outermost electron and nucleus of element C. As the atomic size increases, the effective nuclear attraction experienced by the outermost electron decreases. Therefore, among the atoms A and C, the attraction of the nucleus towards the outermost electron is greater in case of element C.