A compound having one lone pair of electrons
Water
Methane
Ammonia
Hydrogen sulphide
The property which is a characteristic of an electrovalent compound?
It is highly vaporised
It has high melting point
It is a weak electrolyte
It often exists as a liquid
Which compounds usually exist in the form of crystalline solids at room temperature?
Ionic
Covalent
co-ordinate
dative
The most ionic compound of periodic table is
Sodium chloride
Potassium chloride
Magnesium chloride
Ceasium chloride
A substance undergoing oxidation acts as
oxidising agent
reducing agent
redoxing agent
dehydrating agent
CCl4 is insoluble in water because
Water is polar
CCl4 is non polar
Water and CCl4 are polar
Water and CCl4 are non polar
The low value of ionisation energy of the electropositive atom facilitates the formation of
ionic bond
covalent bond
co-ordinate bond
dative bond
Noble gases are
Monoatomic
Diatomic
Triatomic
Polyatomic
Ammonia forms how many covalent bonds?
Three single
Three triple
One single and two double
Three double
Multiple co-valent bond exists in the molecule of
F2
H2
N2
C2H6
