Question

which one of the following ionic species has the greatest Proton affinity to form stable compound
a. NH2-
b. F-
c. I-
d. HS-​

Answer 1

NH2-has greatest proton affinity to form stable compound

Answer 2

Answer:

Explanation:

Answer: NH−2

The conjugate of NH−2 is NH3 which is the weakest acid out of HI, H2S, NH3 and HF.

A)

Solution :

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

Strongest base would have the highest proton affinity i.e, NH−2

Hence Answer is NH−2