Nomenclature Type III Acidic Compounds Names for Binary

Nomenclature- Type III & Acidic Compounds

Names for Binary Compounds that Contain ONLY Nonmetals (TYPE III) p p Use prefixes to show many atoms of each atom is in the molecule. Prefixes n n n p p 1 2 3 4 5 – – – monoditritetrapenta- 6 – hexa 7 – hepta 8 – octa 9 – nona 10 – deca- 1 st element uses its own name 2 nd element changes the ending of its name to IDE

Examples p p p p CO 2 Carbon dioxide H 2 O Dihydrogen monoxide P 4 O 10 Tetraphosphorous decoxide O 2 F 2 Dioxygen difluoride

Try These! p N 2 O 5 p SO 3 p N 2 O p Xe. F 6

Formulas for Binary Compounds that Contain ONLY Nonmetals (TYPE III) Do NOT Cris- Cross! p Prefix always goes with the element it is named with!!!!! p

Examples p p p p Silicon dioxide Si. O 2 Carbon monoxide CO Iodine heptafluoride IF 7 Dichlorine trioxide Cl 2 O 3

Try These! p Ammonia (nitrogen trihydride) p Phosphorous tribromide p Oxygen difluoride

Acids – H is always the 1 st element p Binary Acids n p Have H & 1 other nonmetal Names n n n p Oxyacids n p Have H & polyatomic ion Names n Prefix “hydro” + 2 nd element + ic acid Ex. HBr- hydrobromic acid Ex. H 2 S- hydrosulfuric acid If polyatomic ion’s name ends in –ate, change to –ic acid Ex. H 3 PO 4 - phosphate Becomes phosphoric acid p n If polyatomic ion’s name ends in –ite, change to – ous acid Ex. H 3 PO 3 - phosphite Becomes phosphorous acid p

Try these p HCl p HNO 2 p HNO 3 p HCl. O p H 3 P

Acidic Compounds p Binary Acids – Formulas n n If it has the prefix hydro - in the name, you know it’s only H+ and the nonmetal anion. Criss- cross the charges Example- hydroselenic acid H 2 Se p Oxyacids- formulas n A little bit come complex…

Oxyacids- Formulas p p p If the name has the suffix –ic acid, then the anion is the polyatomic ion that ends in –ate. H+ is the cation. Criss- cross the charges! Example – sulfuric acid H 2 SO 4 p p p If the name has the suffix –ous acid, then the anion is the polyatomic ion that ends in –ite. H+ is the cation. Criiss- cross the charges! Example – sulfurous acid H 2 SO 3

Try These! p Hydroiodic acid p Chloric acid p Hydrocyanic acid p Acetic acid