Honors Chemistry - 9th Grade Freshman: Oxidation Numbers & Ions

Flashcards covering oxidation numbers and ions for Honors Chemistry.

Metals Oxidation Number

Metals (ions from elements to the left of the "staircase") always have a positive oxidation number.

Nonmetals Oxidation Number

Nonmetals (ions from elements to the right of the "staircase") always have a negative oxidation number.

Cations

Positive ions

Anions

Negative ions

Monovalent

Ions with an oxidation number of +1 or -1.

Divalent

Ions with an oxidation number of +2 or -2.

Trivalent

Ions with an oxidation number of +3 or -3.

Hydrogen (I)

H(+1)

Lithium (I)

Li(+1)

Sodium (I)

Na(+1)

Potassium (I)

K(+1)

Copper (I)

Cu(+1)

Silver (I)

Ag(+1)

Ammonium (I)

NH4(+1)

Magnesium (II)

Mg(+2)

Calcium (II)

Ca(+2)

Strontium (II)

Sr(+2)

Barium (II)

Ba(+2)

Copper (II)

Cu(+2)

Iron (II)

Fe(+2)

Mercury (I)

Hg2(+2)

Mercury (II)

Hg(+2)

Manganese (II)

Mn(+2)

Tin (II)

Sn(+2)

Lead (II)

Pb(+2)

Nickel (II)

Ni(+2)

Zinc (II)

Zn(+2)

Aluminum (III)

Al(+3)

Iron (III)

Fe(+3)

Chromium (III)

Cr(+3)

Fluoride (I)

F(-1)

Chloride (I)

Cl(-1)

Bromide (I)

Br(-1)

Iodide (I)

I(-1)

Hydroxide (I)

OH(-1)

Nitrite (I)

NO2(-1)

Nitrate (I)

NO3(-1)

Nitrite

NO2

Nitrate

NO3

Nitride

N

Bicarbonate (I)

HCO3(-1)

Chlorate (I)

ClO3(-1)

Permanganate (I)

MnO4(-1)

Acetate (I)

C2H3O2(-1)

Oxide (II)

O(-2)

Sulfide (II)

S(-2)

Carbonate (II)

CO3(-2)

Sulfite (II)

SO3(-2)

Sulfate (II)

SO4(-2)

Sulfide

S

Sulfite

SO3

Sulfate

SO4

Chromate (II)

CrO4(-2)

Dichromate (II)

Cr2O7(-2)

Chromate

CrO4

Dichromate

Cr2O7

Nitride (III)

N(-3)

Phosphide (III)

P(-3)

Phosphate (III)

PO4(-3)

Phosphate

PO4

Phosphide

P

Polyatomic Ions

A polyatomic ion with a name that ends in "ite" has one less oxygen than its "ate" partner