You heat the end of three metal rods and measure the temperature at the other ends of the rods. which result shows the best thermal conductivity? a. the rod that changes temperature last b. the rod that shows no change in temperature c. the rod that shows the first increase in temperature d. the rod that shows the first decrease in temperature

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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the correct answer to this question is 2