Calculate the volume of a 2.30 molar solution of MnCl 2 that you would need to prepare 250.0 mL of a solution with a concentration of 0.600 molar.

h

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