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Ionic Radii and Ionisation Enthalpy (Group 2)

The alkaline ...

Question

The alkaline earth metal that has greatest affinity for nitrogen is __________.

A

Sr

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B

Mg

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C

Ca

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D

Ba

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Solution

The correct option is B Mg
Among the given alkaline earth metals, magnesium is least electropositve with highest ionization energy. Hence it has greatest affinity for nitrogen.

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