First slide
13th group or boron group

(X) and (Y) are elements belonging to 13th group. The periodic property of (X) is less than (Y). Identify correct combination among the following


Melting point ---- Ga < In < Tl <Al < B

Density  at 298 K---- B < Al < Ga < ln < Tl

Boiling point ------ Tl < In <  Ga < Al  <  B

EM+3|M° -------- Al < Ga < ln < Tl

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