A hypothetical element, Marshallium (Mu), has an average atomic mass of 73.91 amu. Assuming it has 4 stable isotopes, Mu-73, Mu-74, Mu-77, and Mu-78, which of these would you expect do have the highest percent
abundance and lowest percent abundance?

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!

if you need further assistance, let me know: )

~ trueboss72

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