At room temperature, all of the elements in group 18 (the noble gases) Are very reactive.
Are not chemically reactive.
Have the same number of protons.
Have few outer energy level electrons.

are not reactive at room temperature

are not chemically reactive

particle   p is an electron and particle q is a neutron

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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