Classification of Elements and Periodicity in Properties - Result Question 43
####43. Elements of which of the following groups will form anions most readily?
[1992]
(a) Oxygen family
(b) Nitrogen family
(c) Halogens
(d) Alkali metals
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Solution:
- (c) Elements of halogen group form anions most readily.
Electron affinity values are high in case of halogen because halogens have seven electrons $(n s^{2} n p^{5}.$ ) in the valence shell, they have a strong tendency to acquire the nearest inert gas configuration by gaining an electron from the metallic atom and form halide ions easily.
