1. My name is Bond, Ionic Bond; Taken, not shared!
Ionic Compound Naming
My name is Bond,
Ionic Bond;
Taken, not shared!

2. Naming Simple Ionic Compounds
identify the two elements
aways write the metallic element first.
change the ending of the 2nd element (non-metal) to “ide”
Magnesium bromide
MgBr2 =
K2O =
CaCl2 =
Potassium oxide
Calcium chloride

3. Understanding the Formula Simple Ionic Compounds
Since the OVERALL charge on a COMPOUND (MgO, MgCl2) is ZERO, the positive charges must balance the negative charges.
Therefore, if a metal ion (Mg2+) has a charge of +2, then it can form a compound with either:
ONE non-metal ion (O2-) with an ion charge of MgO
Math: 1(+2) + 1(-2) = 0
TWO non-metal ions (Cl1-) with an ion charge of -1. MgCl2
Math: 1(+2) + 2(-1) = 0

4. Learning Check A. Sodium and Sulfur Na+, S2- Na2S
Write the correct formula for the compounds containing the following elements:
A. Sodium and Sulfur
Na+, S2-
Na2S
B. Aluminum & Phosphorus
Al3+, P3-
AlP
C. Magnesium & Nitrogen
Mg2+, N3-
Mg3N2

5. Shortcut for writing Formulas for Simple Ionic Compounds
identify the two element’s symbols and their ion charge
criss-cross ion charges between elements such that they become subscripts
reduce subscripts if necessary
Magnesium Phosphide
Mg P3–
Mg3P2
Calcium Oxide
Ca O2–
Ca2O2
CaO
÷ 2

7. Names & Formulas for Multivalent Ionic Compounds
Some elements have more than one combining capacity (ion charge), so elements can combine in more than one way (multivalent).
Iron can have a combining capacity of 2 or 3:
Example 1: Sometimes when iron combines with oxygen forms a black compound
(FeO = Iron II oxide)
Example 2: Sometimes when iron combines with oxygen forms a rust-coloured compound
(Fe2O3 = Iron III oxide)
Multi-valent compound’s names use Roman Numeral following the cation (transition metal) to indicate which ion was used

8. Names & Formulas for Multivalent Ionic Compounds
It is easy to write the formulas for multivalent ionic compounds, because they tell you their combining capacities.
Example
1) Gold (I) chloride
Au+1 Cl-1
AuCl
PbO2
2) Lead (IV) oxide
Pb+4O-2

9. Naming for multi-valent compounds

10. Learning Check CuO (Cu2+ ) copper (II) Oxide
FeCl3 (Fe3+) iron (III) chloride
CuO (Cu2+ ) copper (II) Oxide
SnF (Sn4+) tin (IV) fluoride
PbCl (Pb2+) lead (II) chloride
Au2O3 (Au3+) Gold (III) Oxide

11. Criss-Cross short cut for Naming for multi-valent compounds
STEP 1: identify the two elements
STEP 2: always write the metallic element first then write the 2nd second
element (non-metal) but change the ending “ide” .
STEP 3: uncross subscripts to superscripts to determine their ion charge
STEP 4: if the ion charge does not match the element ion charge on periodic
table then you have to need to use a multiplier to obtain the proper
ion charges.
STEP 5: if the ion charges match the element ion charge on periodic table
then you use the metallic ion charge as the roman numeral
CuO
Copper ( ) Oxide
Cu1+ O1- x2
Cu2+ O2-
Copper (II) Oxide

12. A group of atoms that tend to stay together and act as one charged ion
POLYATOMIC ION
A group of atoms that tend to stay together and act as one charged ion

13. Some Compounds with Polyatomic Ions

14. Ca1 (OH)2 Ca(OH)2 Na2 (CO3) Na2CO3
Polyatomic ions have their own combining capacity that should be used when writing chemical formulas.
Example: Compound formed with Calcium (Ca2+) and Hydroxide (OH-) would be…
Example: Compound formed between Sodium (Na+) and Carbonate (CO32-) would be…
Ca1
(OH)2
Ca(OH)2
USE BRACKETS AROUND THE POLYATOMIC IONS!!
Na2
(CO3)
Na2CO3

15. Examples: NaOH Sodium and Hydroxide Magnesium and Nitrate Mg(NO3)2
Predict the formula:
NaOH
Sodium and Hydroxide
Magnesium and Nitrate
Ammonium and Sulfate
Mg(NO3)2
(NH4)2SO4

16. Naming compounds containing polyatomic ions
Hint: if the fomurla contains more than two elements than it’s a good chance it contains a polyatomic ion, so go to your polyatomic ion chat.
To name these follow the sames rules except for polyatomic ions do not change their names.
e.g. Na3PO4
Sodium Phosphate

17. Examples: Ca(CO3) Calcium carbonate K(CN) Fe3(PO4)2 Potassium cyanide
Predict the compound name:
Ca(CO3)
K(CN)
Fe3(PO4)2
(NH4)F
Calcium carbonate
Potassium cyanide
Iron (II) phosphate
Ammonium Fluoride

18. NASA has announced the discovery of 715 new planets found with the Kepler Space Telescope. This is the largest number of planets reported in a single go, bringing the running total to The findings confirm the belief that multiplanetary systems are the norm
MATTER - dropletons” that bear some resemblance to liquids but occur under very different circumstances
PLOS ONE - In an effort to increase the amount of scientific information available to the public, the Public Library of Science has announced that their open access scientific journal PLOS ONE will begin to require all authors to make all of their data available to the public upon publication
METEORITE - was discovered in Antarctica in It has a mass of 13.7 kg (30 lbs) and came to Earth about 50,000 years ago. It is believed that the rock originated on Mars approximately 1.3 billion years ago. It is thought that a massive impact of the Martian surface dislodged the rock about 12 million years ago, and it spent over 11 million years in space until coming to Earth’s surface
HYBRID CAR - car to run on compressed air with gasoline back-up for longer journeys and high speeds. LIVER CELLS – Skin to an intermediate cell (similar to stem cell) to liver cell
WHALE GRAVE - The desert is typically no place for a whale, but a portion the Atacama Desert in Chile is a mass grave for large marine mammals that died in large numbers millions of years ago. Three years after the fossils were announced, a cause of death has likely been determined. The researchers were able to discover that these deaths were caused by four different mass strandings, and toxic algae appears to be the culprit
WATER VAPOR - The planet, Tau Bootis, is located about 51 light-years away and orbits the primary star of a binary system in the Boötes constellation