Which of the following correctly lists the three main groups of elements from greatest conductivity to least conductivity? non-metals - metalloids - metals metals - non-metals - metalloids
metalloids - metals - non-metals
metals - metalloids - non-metals

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Explanation:

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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~ trueboss72

the answer is true. hope it .