What are " of the following"?
Answer:
Several of the nonmetals are gases in their elemental form. 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:
Answer:
Nucleus
Explanation: it is the center of the atom, and contains protons and nuetrons
Ethanol is: flammable, liquid at room temperature, the boiling point is 78.37 ° C.
