Please name the following chemical formulas CHEMISTRY

I have an assignment and I dont understand how to give the name for each of the chemical formulas given.

Please can you explain how to do some of them? and why it is how it is


Here are some:

NaI

MgO

Al2S3

K3P

CuCl2

S2O5

PO5

Cl2O6

BrO-

HCl

PO3 -3

I dont understand how to get the name at all!
Please help!

heres what they are:

Sodium Iodide
Magnesium Oxide
Aluminum Sulfide
Potassium Phosphide
Copper (II) Chloride
Disulfur Pentoxide
Phosphorous pentoxide
Cl2O6 reduces to ClO3, leaving chlorine trioxide
bromine oxide, but this one is an ion, meaning it has a charge other than 0
This is an acid, hydrochloric acid
PO3 -3 is not anything, but PO4 -3 is phosphate

so how to do it?

there are three types of molecules when naming them. Type I, II, III
type I:
metal and non-metal

example: NaCl. Sodium is a metal, chlorine is not. So it is a type I.

Rules for naming a type one:
The first element in a molecule (otherwise known as the cation, the one that is positive) is called exactly how it is called on the periodic table. So, we know the first half of NaCl is Sodium _______

for the second half, the anion, the element with the negative charge, you take the name from the periodic table, so Chlorine, but you get ride of the "ine", to make an "ide", leaving you with Chloride.

Put them together, you get sodium chloride.

Naming the anion for other ones may get confusing, so here is a list of some pretty common names of anions in Type I's:
O=Oxygen=Oxide
F=Fluorine=Fluoride
N=Nitrogen=Nitride

get it yet? :D

type II:
A type II is between a transition metal and a non-metal. This one is the most tricky, but once you learn them they are easy! So, you have CuCl2 up there, that is an example of a type II due to the fact that Copper is a transition metal, and Chlorine is a nonmetal. Because transition metals can make different charges, you must represent the charge of the transition metal by putting a roman numeral next to the cation. This can be determined by how many of the anion you have. In this case, you have 2, meaning that you should have a charge of 2+ on the Cu. I say should because there is a possibility of the equation of the molecule reducing. I can't think of any off the top of my head, but just keep that in mind.