2) Which particles are isotopes of each other?
A. X and X B. X and X
C. X and X D. X and X

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

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

the answer is option a.