JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The characteristic not related to alkali metal is [Manipal 2009]

(A)High ionisation energyCorrect
(B)Their ions are isoelectronic with noble gases
(C)Low melting point
(D)Low electronegativity

Answer: (A)

Solution

Alkali metals have low, not high, ionisation energy — this is precisely why they lose their valence electron so readily, so (A) misdescribes them. Their singly-charged cations do have noble-gas electronic configurations

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Question ID VK-137579