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Question
The highest melting point of alkali metal is :
The highest melting point of alkali metal is :
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Solution
The correct option is A Li
Li has highest melting point among alkali metals. All alkali metals have low M.P. The M.P.decrease down the group. The low M.P. are attributed to their larger atomic size due to which the binding energies of their atoms in the crystal lattice are low.
So the melting point decreases from Li to Rb.
Hence option A is correct.
Li has highest melting point among alkali metals. All alkali metals have low M.P. The M.P.decrease down the group. The low M.P. are attributed to their larger atomic size due to which the binding energies of their atoms in the crystal lattice are low.
So the melting point decreases from Li to Rb.
Hence option A is correct.
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