molecular and electron geometry and polyatomics and some groups

2 bonds, 0 lone pairs

linear, 180

3 bonds, 0 lone pairs

trigonal planar, 120

2 bonds, 1 lone pair

bent, 120

4 bonds, 0 lone pairs

tetrahedral, 109.5

3 bonds, 1 lone pair

trigonal pyramidal, 107

2 bonds, 2 lone pairs

angular, >109.5

5 bonds, 0 lone pairs

trigonal bipyramidal, 90,120,180

4 bonds, 1 lone pair

seesaw, <90, <120

3 bonds, 2 lone pairs

t-shaped, <90,<180

2 bonds, 3 lone pairs

linear, 180

6 bonds, 0 lone pairs

octahedral, 90, 180

5 bonds, 1 lone pair

square pyramidal, <90, 180

4 bonds, 2 lone pairs

square planar, 90, 180

7 bonds, 0 lone pairs

pentagonal bipyramidal, 90, 72, 180

has at least one c=c double bond

alkene

has at least one c≡c triple bond

alkyne

-OH group attached to a saturated carbon

alcohol

nitrogen bonded to 1, 2, or 3 carbons; lone pair on N usually

amine

-COOH group; carbonyl next to -OH

carboxylic acid

ammonium

NH₄⁺

acetate

C₂H₃O₂^-

bicarbonate

HCO₃^-

nitrate

NO₃^-

nitrite

NO₂^-

hydroxide

OH^-

cyanide

CN^-

permanganate

MnO₄^-

carbonate

CO₃^2-

sulfate

SO₄^2-

sulfite

SO₃^2-

chromate

CrO₄ ^2-

dichromate

Cr₂O₇^2-

oxalate

C₂O₄^2-

phosphate

PO₄^3-

phosphite

PO₃^3-