Calculate the moles in a sample of Chromium, Cr metal that has a mass of 54.3 grams a. 0.958 moles b. 1.04 moles c. 2.30 moles d. 52.0 moles 52.00 Cr 24 Chromium help fast please​

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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