JEE Main 2017 — D And F Block Elements Question with Solution
From: JEE Main 2017 (Online) 9th April Morning Slot
Question
Which of the following ions does not liberate hydrogen gas on reaction with dilute acids ?
Choose an option
Show full solutionCorrect option: D
Correct answer
DMn2+
Step-by-step explanation
The third ionisation energy of Mn is too high due to
stable half filled 3d-orbital. Hence, it cannot further get oxidised
to liberate hydrogen.
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This is a previous-year question from JEE Main 2017, covering the D And F Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.