In a solution at 25°c, the [h+] is 3.5 × 10−6 m. what is the [oh−]? 3.5 × 10−20 m 2.9 × 10−9 m 1.0 × 10−7 m 3.5 × 10−6 m

the increase of protons   hope this

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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~ trueboss72

the correct answer is c