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Assertion: Aluminium has a higher melting point than gallium and indium.
Reason: Aluminium has a higher charge density than gallium and indium.
Option: 1
Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
Option: 2
Both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
Option: 3
Assertion is true, but Reason is false.
Option: 4
Assertion is false, but Reason is true.
Answers (1)
The electronegativity of group 13 elements decreases down the group due to the increase in atomic size, which causes a decrease in the attraction between the nucleus and the valence electrons.
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