Friday Bellwork Name the following compounds or write the formulas, as appropriate. CCl4 P4O10 N2O7 XeF4

Monday Bellwork Practice your ions! Write the symbol and charge for the following ions. Nitride Oxide Magnesium ion Rubidium ion Fluoride

Naming and Writing Ionic Formulas Unit 6 Ch 9 Part 3 Naming and Writing Ionic Formulas

9.2 Ionic Compounds Binary compounds- 2 elements Binary ionic compounds- 1 metal + 1 nonmetal Binary molecular compounds- 2 nonmetals

When naming ionic compounds, simply name the ions as they appear in the formula. When naming ionic compounds containing a transition metal, include the Roman numeral representing the charge.

Examples: NaCl NaF nonmetal metal CaCl2 **The more positive element (metal) always comes first.

Example: aluminum chloride AlCl3 KBr FeCl2 FeCl3 potassium bromide iron(II) chloride iron(III) chloride

Ionic Metal and Nonmetal _____VALENT METAL means: _____________ Metals in group _____, _______, & these 4: __________________ Ex: Rule: Name the __________ then the __________ ending in ________. _____VALENT METAL means: ___________________________ Located in ________ & under the __________________. Same as mono- BUT use a ______________ to tell the metal’s __________.

Contains a polyatomic ion: Ionic Contains a polyatomic ion: Ex: Rule: Follow the same mono- or multi- valent metal rules; use the polyatomic ion’s name.

When writing the formula for an ionic compound, the charges of the ions must cancel out to give the compound a neutral charge.

Example: sodium chloride Na+ Cl- 1 1 Na1Cl1 = NaCl

magnesium iodide Mg2+ I- 2 1 Mg1I2 = MgI2

magnesium nitride Mg 2+ N3- 2 3 Mg3N2

strontium selenide Sr2+ Se2- 2 2 = Sr2Se2 SrSe

rubidium iodide Rb+ I- RbI aluminum oxide Al3+ O2- Al2O3

When writing formulas containing polyatomic ions, use parentheses around multiple polyatomic ions. ammonium carbonate NH4+ CO32- 2 1 (NH4)2CO3

strontium hydroxide Sr2+ OH- 1 2 Sr(OH)2

calcium nitrate Ca2+ NO3- 1 2 Ca(NO3)2

aluminum phosphate Al3+ PO43- 3 3 AlPO4

When naming ionic compounds containing a transition metal, don’t forget to include the Roman numeral for the charge. Ex. FeCl2 iron(II) chloride FeCl3 iron(III) chloride

Tuesday Bellwork Match the following ions with their names. ___NO3- A. nitride ___CN- B. silver ion ___Ag+ C. cyanide ___NH4+ D. ammonium ___N3- E. chloride ___Cl- F. nitrate