Classification of Elements and Periodicity in Properties - Result Question 23
####23. Which one of the following ionic species has the greatest proton affinity to form stable compound?
(a) $NH_2^{-}$
(b) $F^{-}$
(c) $I^{-}$
(d) $HS^{-}$
[2007]
Show Answer
Solution:
- (a) Proton affinity decreases in moving across the period from left to right due to increase in charge, within a group the proton affinities decreases from top to bottom.
Nitrogen family $>$ Oxygen family $>$ Halogens
