Determination of electrical conductivity:

relationship between the electrical conductivity and the type of intermolecular force of attraction existing between the molecules

Metals include elements such as, iron, copper, chromium, titatium, etc., I'm sure you know what a metal and non-metal is by looking at your periodic table.

melting is breaking the bonds in the crystals. Thus, what does that mean? The stronger the bonds are, the harder to break and therefore the higher the melting point.

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 ratio of the conjugate base to the acid required to attain the desired ph.