Use the periodic table to choose the element that matches each description. halogen: group iia: nonreactive: alkali metal:

Halogen,  group IIA, nonreactive, and alkali metal are found in 17th, 2nd, 18th, and 1st column respectively.

Periodic Table:

The elements are arranged according to their atomic number. The elements with similar properties are arranged in groups.

Halogen:

Group 2A:

Nonreactive:

Alkali metal:

Hence we can conclude that halogen,  group IIA, nonreactive, and alkali metal are found in 17th, 2nd, 18th, and 1st column respectively.

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yes

explanation:

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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.

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