Click the correct answer (True or False).
Click the correct answer.
Which of the following is not a type of molecule based on atomicity?
Monoatomic molecule
Diatomic molecule
Triatomic molecule
Tetra-atomic molecule
Which of the following elements possesses variable valency?
Fluorine
Sodium
Iron
Silicon
Which of the following compound has the formula SO2?
Sulphur oxide
Sulphur tetraoxide
Sulphur dioxide
Sulphur trioxide
Click the correct answer.
A/An
cannot exist independently.
molecule
atom
compound
mixture
A
is the smallest unit of an element or a compound consisting of a group of atoms.
mixture
compound
atom
molecule
A water molecule contains one atom of oxygen and two atoms of
.
oxygen
hydrogen
nitrogen
silicon
Atoms always combine in
to form a molecule.
fractions
whole numbers
partially
multiples
When two or more atoms of different elements combine in a definite proportion by mass, a
is formed.
compound of a compound
atom of a compound
molecule of a compound
fraction of a compound
