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Which one of the following ionic species has the greatest proton affinity to form stable compound?
Options
(a) NH₂⁻
(b) F⁻
(c) I⁻
(d) HS⁻
Correct Answer:
NH₂⁻
Explanation:
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
Related Questions: - Which is weakest acid
- During change of O₂ to O₂⁻ ion, the electron adds on which one of the following
- How many coulombs are required for the oxidation of 1 mole H₂O to O₂
- Which one of the following gives only one monochloro derivative
- If 18g of water is electrolysed then volume of oxygen obtained at STP is
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which is weakest acid
- During change of O₂ to O₂⁻ ion, the electron adds on which one of the following
- How many coulombs are required for the oxidation of 1 mole H₂O to O₂
- Which one of the following gives only one monochloro derivative
- If 18g of water is electrolysed then volume of oxygen obtained at STP is
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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