Q.

Which of the following is correct for Ga?

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a

Its size is smaller than that of Al

b

Its ionization enthalpy is very close to that of Al

c

Its m.p. is lowest in the family (only30o C)

d

All of the above

answer is D.

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Detailed Solution

Size of Al is =143 pm ; Ga =135 pmIonisation  enthalpy of Al =577 KJ/mol and Ga =579 KJ/molMelting point order B >Al >Tl >In >GaGallium exist as liquid state during summer
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