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Answer:

Nitrogen is a chemical element with an atomic number of 7 (it has seven protons in its nucleus). Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together. Molecular nitrogen is a colorless, odorless, tasteless, and inert gas at normal temperatures and pressures.

Explanation:

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Rodriguezmarielys13

Answer:

1: consists of only one kind of Atom

2:cannot be broken down into a simpler type of Mather by either physical or chemical .

3: can exist as either atoms (e.g. Argon) or molecules ( nitrogen).

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