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Which of the following elements will gai...

Which of the following elements will gain one electron more readily comparison to other elements of their groups? a)`S(g)` B)`Na(g)` C)`O(g)` D)`CI(g)`

A

S(g)

B

Na(g)

C

O(g)

D

Cl (g)

Text Solution

Verified by Experts

The correct Answer is:
A, D
(a,d) Chlorine has the highest tendency to gain one electron because by doint so, it acquires the stable electrons configuration ofhte nearest noble gas. i.e., argon. Sulphur and oxygen belong to group 16 but the size of oxygen is much than that of sulphur.
As a result, when an electron is added to them, the electron-electron represents in the smaller 2p-subshell of oxygen are comparatively stronger than those present in the bigger 3d-subshell of oxygen are comparatively stronger than those present in the bigger 3p-subshell of sulphur. Therefore, S has a higher tendency to gain an electron than O.
Na, on the other hand, has only one electron in the valence shell and hence has a strong tendency to lose rather than gain one electron.
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