Question

a. bao barium oxyg
b. cabr₂ calcium bro
c. aln aluminum n
d. cucl₂ copper(ii) cl
e. fe₂o₃
f. pbs

g. zncl₂

barium(ii) oxide barium oxide
barium oxygen(ii)
calcium(ii) bromide
calcium bromine
calciumide bromine
aluminum nitrogen
aluminum(iii) nitride
aluminide nitride
copper(i) chloride
copper chloride
copper chloride(ii) iron(ii) oxide
iron(iii) oxide iron oxide
iron oxide(ii) lead(iv) sulfide
lead(ii) sulfide lead sulfide
lead sulfide(ii) zinc chloride
zinc(ii) chloride zinc chlorine
zinc chloride(ii)

Explanation:

Step 1: Analyze each compound

a. \( \text{BaO} \)

Barium (Ba) has a common oxidation state of +2, and oxygen (O) has -2. The name is Barium oxide (since Ba is in +2, and for main group metals with fixed oxidation states, we don't use Roman numerals usually). So match with "Barium oxide".

b. \( \text{CaBr}_2 \)

Calcium (Ca) is +2, bromine (Br) is -1. Calcium has a fixed oxidation state (+2), so name is Calcium bromide.

c. \( \text{AlN} \)

Aluminum (Al) is +3, nitrogen (N) is -3. Aluminum has a fixed oxidation state (+3), so name is Aluminum nitride? Wait, no, for binary compounds with non - metals, when the metal has a fixed oxidation state, but also, for aluminum nitride, the correct name is Aluminum(III) nitride? Wait, no, aluminum is in group 13, so its oxidation state is +3. The correct name is Aluminum nitride? Wait, no, the formula is AlN. The correct name is Aluminum(III) nitride? Wait, looking at the options, "Aluminum(III) nitride" is an option. Wait, but actually, for aluminum, since it has a fixed oxidation state of +3, sometimes it's called Aluminum nitride, but the option "Aluminum(III) nitride" is there. Wait, let's check the options. The options for c: "Aluminum nitrogen", "Aluminum(III) nitride", "Aluminide nitride". So the correct name is Aluminum(III) nitride because Al is +3 and N is -3, and we use Roman numerals for metals with variable oxidation states, but aluminum usually has +3, but in the options, "Aluminum(III) nitride" is the correct one.

d. \( \text{CuCl}_2 \)

Copper (Cu) here: in \( \text{CuCl}_2 \), Cl is -1, so Cu is +2. So the name is Copper(II) chloride? Wait, the options have "Copper chloride(II)"? Wait, no, the correct naming: for binary compounds, the name is metal (oxidation state in Roman numerals) + non - metal (ide). So Copper(II) chloride, but the option is "Copper chloride(II)".

e. \( \text{Fe}_2\text{O}_3 \)

Iron (Fe): in \( \text{Fe}_2\text{O}_3 \), O is -2, so 2x + 3*(-2)=0 → 2x = 6 → x = +3. So iron is +3, name is Iron(III) oxide.

f. \( \text{PbS} \)

Lead (Pb): in PbS, S is -2, so Pb is +2 (since 1Pb + 1(-2)=0 → Pb = +2). So the name is Lead(II) sulfide.

g. \( \text{ZnCl}_2 \)

Zinc (Zn) is +2, Cl is -1. Zinc has a fixed oxidation state of +2, so name is Zinc chloride.

Step 2: Match each compound to the correct name

a. \( \text{BaO} \)

• Barium has a +2 oxidation state. The correct name is "Barium oxide" (since Ba is a main - group metal with a fixed oxidation state, we don't use Roman numerals here).

b. \( \text{CaBr}_2 \)

• Calcium is +2, bromine is -1. The correct name is "Calcium bromide" (Ca has a fixed oxidation state of +2).

c. \( \text{AlN} \)

• Aluminum is +3, nitrogen is -3. The correct name is "Aluminum(III) nitride" (Al has a +3 oxidation state, and we use Roman numerals to indicate the oxidation state in the name).

d. \( \text{CuCl}_2 \)

• Copper is +2 (since 1Cu+2(-1) = 0→Cu = +2). The correct name is "Copper chloride(II)" (or Copper(II) chloride, and the option "Copper chloride(II)" is available).

e. \( \text{Fe}_2\text{O}_3 \)

• Iron is +3 (from 2x+3*(-2)=0→x = +3). The correct name is "Iron(III) oxide".

f. \( \text{PbS} \)

• Lead is +2 (from 1Pb+1(-2)=0→Pb = +2). The correct name is "Lead(II) sulfide".

g. \( \text{ZnCl}_2 \)

• Zinc is +2 (Zn has a fixed oxidation state of +2). The correct name is "Zinc chloride".

Answer:

a. \( \text{BaO} \): Barium oxide
b. \( \text{CaBr}_2 \): Calcium bromide
c. \( \text{AlN} \): Aluminum(III) nitride
d. \( \text{CuCl}_2 \): Copper chloride(II)
e. \( \text{Fe}_2\text{O}_3 \): Iron(III) oxide
f. \( \text{PbS} \): Lead(II) sulfide
g. \( \text{ZnCl}_2 \): Zinc chloride