Choose the correct statements about allotrope | vedclass

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(A) $I$. Graphite consists of layers of carbon atoms arranged in hexagonal rings, which is correct.$II$. Buckminsterfullerene $(C_{60})$ is aromatic i

Vedclass · Accepted Answer

$I$ & $IV$

Vedclass · Answer

(A) $I$. Graphite consists of layers of carbon atoms arranged in hexagonal rings, which is correct.$II$. Buckminsterfullerene $(C_{60})$ is aromatic in nature due to the delocalization of $\pi$-electrons in the spherical cage, so this statement is incorrect.$III$. The distance between two adjacent layers in graphite is $340 \ pm$, not $141.5 \ pm$. The $C-C$ bond length within the layer is $141.5 \ pm$. Thus, this statement is incorrect.$IV$. In both graphite and Buckminsterfullerene, each carbon atom is $sp^2$ hybridized. Thus, this statement is correct.Therefore, statements $I$ and $IV$ are correct.

Material	Application
$A$. Silicones	$i$. As a catalyst
	$ii$. Greases
$B$. Zeolites	$iii$. In surgical implants
	$iv$. As ion exchangers

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Match the following and choose the correct code.
Material Application
$A$. Silicones $i$. As a catalyst
$ii$. Greases
$B$. Zeolites $iii$. In surgical implants
$iv$. As ion exchangers

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