UNIT 10: Chemical bonding - Online Test
Compound : No. of
valance electron on the central atom
XeF2 : 10
AlCl3 : 6
SF6 : 12
SCl2 : 8
- electron rich,
CH3 – CH3 – Covalent neutral molecule.
BH3 - electron deficient
water contain only σ bonds and no π bonds option
2-butynal
no. of σ bonds = 8[4C-H;,3C-C;1C-O]
no. of π bonds = 3[2C-C; 1C-O]
ratio=8/3
Normal bond angle in regular trigonal bipyramidal are 90º
and 120 º
due to l.p - b.p repulsion, bond angle reduced 89 º, 117 º
Assertion: Oxygen
molecule is paramagnetic.
Reason : It has two
unpaired electron in its bonding molecular orbital
Correct Statement :
Oxygen molecule is paramagnetic Correct Reason
It has two unpaired electron in its antibond-ing molecular
orbital.
Option (c) assertion true and reason false.
ClF3 – Sp3d hybridisation
NF3 - Sp3 hybridisation
BF3 - Sp2 hybridisation
Option (b) is correct Sp3 hybridisation.
Oribital geometry tetrahedron, bond angle 109º28'
