Q 1 :

Amongst the following, the total number of species not having eight electrons around central atom in its outermost shell, is          [2023]

NH3,AlCl3,BeCl2,CCl4,PCl5

  • 4

     

  • 1

     

  • 3

     

  • 2

     

(3)

AlCl3,BeCl2 and PCl5 do not have eight electrons around central atom in their outermost shells.



Q 2 :

Choose the correct statement:                [2022]

  • Both diamond and graphite are used as dry lubricants.

     

  • Diamond and graphite have two dimensional network.

     

  • Diamond is covalent and graphite is ionic.

     

  • Diamond is sp3 hybridised and graphite is sp2 hybridised.

     

(4)