I don’t get it. Can someone help me !

answer; i believe that the correct answer is (a); a large rock being weathered by wind and rain;

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

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.