Question

mixed practice!
name the following:

1. na2o
2. caco3
3. pbs2
4. sn3n2
5. cu3po4
6. hgf2

mixed up... the other way
write the formula:

1. copper (ii) chlorate
2. calcium nitride
3. aluminum carbonate
4. potassium bromide
5. barium fluoride
6. cesium hydroxide

Explanation:

Part 1: Naming the Compounds (Mixed Practice)

1. $\ce{Na_{2}O}$

Step 1: Identify ions

Sodium ($\ce{Na^+}$) and oxide ($\ce{O^{2-}}$).

Step 2: Name using ion names

Sodium oxide (since it's a binary ionic compound, name cation first then anion with -ide suffix).

Step 1: Identify ions

Calcium ($\ce{Ca^{2+}}$) and carbonate ($\ce{CO_3^{2-}}$).

Step 2: Name using ion names

Calcium carbonate (cation + polyatomic anion).

Step 1: Determine lead's charge

Sulfide is $\ce{S^{2-}}$, 2 sulfides give total negative charge of $2\times(-2) = -4$. So lead has charge of +4 (since compound is neutral).

Step 2: Name with charge (for transition metal)

Lead(IV) sulfide (cation with charge in roman numerals + anion with -ide).

Answer:

Sodium oxide

2. $\ce{CaCO_{3}}$