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Sladkaya [172]
3 years ago
5

Which of these chemical formulas — Cl2 , KCI, Ar, NO2– represents both an element and a molecule ?

Chemistry
2 answers:
Tasya [4]3 years ago
4 0

The answer is: Cl2.

Chlorine is diatomic molecule made of two chlorine atoms.

Diatomic molecules are molecules made of two atoms.

They can be homonuclear (molecule made of two atoms of the same element) and heteronuclear (molecule made of two different atoms).

Chlorine (Cl) is halogen element.

Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.



velikii [3]3 years ago
3 0

The answer is Cl2. Hope this helps!

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Answer:

detail is given below.

Explanation:

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According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

For example:

In given photosynthesis reaction:

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lilavasa [31]

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