Answer:
When ethylene is subjected to ozone it forms Acetaldehyde and oxygen is released
Explanation:
The fourth statement is true..........
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2 Fluorine atoms covalently bonded with each other, each sharing an equal number of a single, one valence electron to achieve a stable octet, would form a diatonic fluorine gas. It is a diatomic molecule, a molecule consisting of 2 atoms that are the same, in this case fluorine.
The mass of substance which consists the equal number of particles as 12 grams of Carbon-12 is said to be mole.
For example:
The balanced chemical equation for production of water from hydrogen and oxygen is:

That means 2 moles of
reacts with 1 mole of
to give 2 moles of
.
The given formula is
.
Hence, 4 represents the number of moles in
formula that is 4 moles of
.
The number of atoms of sodium,
in
is:

The number of atoms of sulfur,
in
is:

The number of atoms of oxygen in,
in
is:
