Identify the correct statements about Boron.I | vedclass

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(D) Boron exists as a very hard,black,non-metallic solid with a very strong crystalline lattice,which gives it an unusually high melting point.Boron i

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$I, IV$ only

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(D) Boron exists as a very hard,black,non-metallic solid with a very strong crystalline lattice,which gives it an unusually high melting point.Boron is a non-metal and is a poor conductor of electricity,whereas other members of the group are metals and conduct electricity.The density of boron is relatively low compared to other elements in the group.The $^{10}B$ isotope has a high ability to absorb neutrons,making it useful in nuclear reactors as control rods and protective shields.

List-$I$	List-$II$
$A$. Melting point $[K]$	$I$. $Tl > In > Ga > Al > B$
$B$. Ionic Radius $[M^{+3} / pm]$	$II$. $B > Tl > Al \approx Ga > In$
$C$. $\Delta_{i} H_1 [kJ \ mol^{-1}]$	$III$. $Tl > In > Al > Ga > B$
$D$. Atomic Radius $[pm]$	$IV$. $B > Al > Tl > In > Ga$

Identify the correct statements about Boron.
$I.$ It has a high melting point.
$II.$ It has a high density.
$III.$ It has high electrical conductivity.
$IV.$ The $^{10}B$ isotope of it has a high ability to absorb neutrons.

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Identify the correct statements about Boron.$I.$ It has a high melting point.$II.$ It has a high density.$III.$ It has high electrical conductivity.$IV.$ The $^{10}B$ isotope of it has a high ability to absorb neutrons.