Both lithium and magnesium are known to be harder and lighter than other elements in their respective groups. Which property contributes to their hardness?

Question

Both lithium and magnesium are known to be harder and lighter than other elements in their respective groups. Which property contributes to their hardness?, High electronegativity, High atomic radius, High density, Strong metallic bonding

MARKS App · Accepted Answer

The hardness of lithium and magnesium is due to strong metallic bonding in their crystal structures.

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