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  • The decreasing order of melting point in group13 element is Option: 1 B>Al>Ga>In>TlOpt

The decreasing order of melting point in group13 element is 

Option: 1

B>Al>Ga>In>Tl


Option: 2

Tl>In>Ga>Al>B


Option: 3

B>Al>Tl>In>Ga


Option: 4

B>Al>In>Tl>Ga


Answers (1)

best_answer

As we have learnt,

Due to strong crystalline lattice, boron has usually high melting point

The high melting point of boron is because of its icosahedral structure.

The melting point data is given below:

 \mathrm{B: 2453K,\quad Al:933K,\quad Ga: 303K,\quad In: 430K,\quad Tl:576K}

Therefore, option (3) is correct.

Posted by

Anam Khan

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