Chem midterm (POLYATOMIC IONS + molecular geometry)

Aluminum formula + formal charge

Al +3

Ammonium formula + formal charge

(NH4)+

Barium formula + formal charge

Ba 2+

Cadmium formula + formal charge

Cd 2+

calcium formula + formal charge

Ca 2+

Cesium formula + formal charge

Cs +

Chromium (III) or Chromic formula + formal charge

Cr 3+

Cobalt (II) or cobaltous

Co 2+

Copper (I) or Cupric

Cu +

Hydrogen

H+

Iron (II) or ferrous

Fe 2+

Iron (III) or ferric

Fe 3+

Lead (II) or plumbous

Pb 2+

lithium

Li +

Magnesium

Mg 2+

Manganese (II) or manganous

Mn 2+

Mercury (I) or mercurous

(Hg2) +2

Mercury (II) or mercuric

Hg 2+

potassium

K+

Rubidium

Rb +

Silver

Ag +

Sodium

Na +

Strontium

Sr 2+

Tin (II) or stannous

Sn 2+

Zinc

Zn 2+

Bromide

Br-

Carbonate

(CO3) -2

Chlorate

(ClO3)-

Chloride

Cl-

Chromate

(CrO4) -2

Cyanide

CN-

Dichromate

(Cr2O7) 2-

Dihydrogen phosphate

(H2PO4)-

Fluride

F-

Hydride

H-

Hydrogen carbonate or bicarbonate

(HCO3)-

Hydrogen Phosphate

(HPO4) 2-

Hydrogen sulfate or bisulfate

(HSO4) -

Hydroxide

OH-

iodide

I-

Nitrate

(NO3)-

Nitride

N3-

Nitrite

(NO2)-

Oxide

O2-

Permanganate

(MnO4)-

Peroxide

(O2)2-

Phosphate

(PO4) 3-

Sulfate

(SO4) 2-

Sulfide

(S)2-

Sulfite

(SO3) 2-

Thiocynate

(SCN)-

acetate

C2H3O2)-

ammonia

NH3

CN #

the number of ligand atoms bonded to a central atom

Serric number

the number of ligand atoms bonded to a central atom + the number of lone pairs on the central atom

CN=2 SN=2 shape molecular & elentron

linear

CN=3 SN=3 molecular and electron shape

trigonal plannar

CN=4 SN=4 molecular and electron geometry

tetrahedral

CN=5 SN=5 molecular and electron geometry

trigonal bipyramidal

CN=6 SN=6 molecular and electron geometry

octahedral

CN=3 SN=4 LP=1 molecular and electron geometry

electron geo: tetrahedral molecular geo: trigonal pryamidal

CN=2 SN=3 LP=1 molecular and electron geometry

electron geo: trigonal plannar molecular geo: bent

CN=2 SN=4 LP=2 molecular and electron geometry

electron geo: tetrahedral molecular geo: bent

CN=3 SN=4 LP=1 electron and molecular geometry

electron geo: tetrahedral molecular geo: trigonal pyramidal

CN=4 SN=5 LP=1 molecular and electron geometery

electron geo: trigonal bipyramidal molecular geo: seesaw

CBN=2 SN=5 LP=2 electron and molecular geometry

electron geo: trigonal bipyramidal molecular: T-shape

CN=2 SN=5 LP=3 electron and molecular geometry

electron geo: trigonal bipyramidal molecular geo: linear

CN=5 SN=6 LP=1 electron and molecular geometry

electron geo: octahedral molecular geo: square pyramidal

CN=4 SN=6 LP=2 electron and molecular geometry

electron geo : octahedral molecular geo : square planar