20 Elements, Common Acids, AND Name of Polyatomic Ions

Name, Symbol, Preferred Charge, # of Valence Electrons OR Charge and Formula of Polyatomic Ion

Hydrogen

Hydrogen

H

+1

1 val. e-

Helium

He

NO charge

0 val e- (full shell)

Lithium

Li

+1

1 val. e-

Beryllium

Be

+2

2 val. e-

Boron

B

+3

3 val. e-

Carbon

C

N/A charge

4 val. e-

Nitrogen

N

-3 charge

5 val. e-

Oxygen

O

-2

6 val. e-

Fluorine

F

-1

7 val. e-

Neon

Ne

NO charge

0 val. e- (full shell)

Sodium

Na

+1

1 val. e-

Magnesium

Mg

+2

2 val. e-

Aluminum

Al

+3

3 val. e-

Silicon

Si

N/A charge

4 val. e-

Phosphorous

P

-3

5 val. e-

Sulfur

S

-2

6 val. e-

Chlorine

Cl

-1

7 val. e-

Argon

Ar

NO charge

0 val. e- (full shell)

Potassium

K

+1

1 val. e-

Calcium

Ca

+2

2 val. e-

Ammonium

+1 cation

NH4

Acetate

-1 anion

C2H3O2

Bicarbonate

-1 anion

HCO3

Hypochlorite

-1 anion

ClO

Chlorite

-1 anion

ClO2

Chlorate

-1 anion

ClO3

Perchlorate

-1 anion

ClO4

Cyanide

-1 anion

CN

Hydroxide

-1 anion

OH

Nitrite

-1 anion

NO2

Nitrate

-1 anion

NO3

Permanganate

-1 anion

MnO4

Thiocynate

-1 anion

SCN

Carbonate

-2 anion

CO3

Chromate

-2 anion

CrO4

Dichromate

-2 anion

Cr2O7

Sulfite

-2 anion

SO3

Sulfate

-2 anion

SO4

Phosphite

-3 anion

PO3

Phosphate

-3 anion

PO4

Hydrochloric Acid

HCl

strong

Sulfuric Acid

H2SO4

strong

Nitric Acid

HNO3

strong

Carbonic Acid

H2CO3

weak

Hydrobromic Acid

HBr

strong

Hydroiodic Acid

HI

strong

Perchloric Acid

HClO4

strong

Chloric Acid

HClO3

Phosphoric Acid

H3PO4

weak