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Question
Mercury is the only metal liquid at room temperature due to its:-
Options
Very high ionisation enthalphy and weak metallic bond
Low ionisation enthalphy
High atomic mass
High vapour pressure
MCQ
Solution
Very high ionisation enthalphy and weak metallic bond
Explanation:
Because of its high ionisation energy (all tilled orbitals) and weak metallic bonding, mercury (Hg) is liquid.
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