Using 18.92 g of PF3 and 18.84 g of XeF4 in the following reaction, determine the Limiting Reactant.
PF3 + XeF4 ---> PF5 + Xe

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

answerca air mass;