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3 years ago

Which is an example of an atom?

Chemistry

2 answers:

shutvik [7]3 years ago

8 0

The smallest unit of Ne (Neon)

xxMikexx [17]3 years ago

4 0

Answer:

Option A

Explanation:

An atom is the smallest particle of a chemical element that can exist.

Using the method of elimination;

Option A - This correct because an atom is the smallest unit of a chemical element ( Neon). It fits the definition given above.

Option B - This option is wrong because P4 is a substance that is made up of four atoms of the same element, so it is a molecular element and not an atom.

A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.

Option C - This option is wrong because NH3 is a compound containing two different elements.

Option D - This option is wrong because H2O is a compound containing two different elements.

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Answer : The number of moles of $SF_6$ is, $7.63\times 10^{-7}$ moles.

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