The p-Block Elements (Group 13 and 14)

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1. 1 2022 Allotropes of Carbon #
   Choose the correct statement.
   A Both diamond and graphite are used as dry lubricants.

   B Diamond and graphite have two dimensional network

   C Diamond is covalent and graphite is ionic

   D Diamond is $sp^3$ hybridised and graphite is $sp^2$ hybridized.
   Check Answer
2. 2 2022 Boron Family – Diborane #
   Which of the following statement is not correct about diborane?
   A Both the Boron atoms are $sp^2$ hybridised.

   B There are two 3-centre-2-electron bonds.

   C The four terminal B-H bonds are two centre two electron bonds

   D The four terminal Hydrogen atoms and the two Boron atoms lie in one plane
   Check Answer

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