What does n, l and s mean in chemistry?

These three numbers, n, ℓ, and s can be used to describe an electron in a stable atom.

Explanation:

Each electron's quantum numbers are unique and cannot be shared by another electron in that atom. This property is called the Pauli Exclusion Principle.

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- decrease the number of plants and animals living in the water.

elements make up everything, and they combine to make compounds.

the answer is c