How many pairs of electrons are shared between Nitrogen atoms in N2 molecule?
1
2
3
4
How many lone pairs are present in oxygen in the H2O molecule
0
MgO is slightly soluble in
Chloroform
Water
Benzene
Toluene
How many electrons are needed for oxygen atoms to attain octet electronic configuration in its valence shell?
5
How many electrons are present in the valence shell of sulphur?
6
7
Which is the donor atom in sulphur trioxide?
S
O
H
None of these
Which among the following molecules do not obey octet rule
NaCI
CaO
AICI3
BF3
17th group elements are also known as
Chalcogens
Noble gases
Halogens
Alkaline earth metals
Which one of the following do not have an octet valence shell electronic configuration?
O2-
Na+
Ne
S-
Which one of the following is an electron deficient compound?
CH4
H2O
HF
