Question

which substance is a gas at room temperature 25 degrees​

Answer 1

Answer:

Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2).

Explanation:

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Answer 2

Answer:

1. Oxygen
2. Ozone
3. Fluorine
4. Nitrogen