Boron exists in different allotropic forms. All allotropic form contains icosahedral units (icos...

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Boron exists in different allotropic forms. All allotropic form contains icosahedral units (icosahedral is a regular shape with 12 corners and 20 faces) with boron atoms at all 12 corners and all bonds are equivalent. Calculate the heat evolved at constant pressure (in \( \mathrm{kJ} / \mathrm{mole} \) ) of boron atom undergoing the above change if the bond dissociation enthalpy of B-B bond is \( 300 \mathrm{~kJ} / \mathrm{mol} \).
(b) 750
(c) 1500
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