Question

question 13 (1 poi
listen
the correct names of pbcl₄ and nibr₂ are:

1. iron(iv) chloride and nitrogen bromide
2. lead(iv)chloride and nickel(ii)bromide
3. lead chloride (iv) and nitrogen bromide
4. lead(ii)chloride and nickel(i)bromide

Explanation:

Step1: Analyze \( \text{PbCl}_4 \)

• \( \text{Pb} \) is lead. Chloride (\( \text{Cl}^- \)) has a charge of -1, and there are 4 \( \text{Cl}^- \), so total negative charge is \( 4\times(-1) = -4 \). To balance, \( \text{Pb} \) must have a +4 charge. So the name is lead(IV) chloride.

Step2: Analyze \( \text{NiBr}_2 \)

• \( \text{Ni} \) is nickel. Bromide (\( \text{Br}^- \)) has a charge of -1, and there are 2 \( \text{Br}^- \), so total negative charge is \( 2\times(-1) = -2 \). To balance, \( \text{Ni} \) must have a +2 charge. So the name is nickel(II) bromide.

Step3: Evaluate options

• Option 1: Incorrect (uses iron and nitrogen, not lead and nickel).
• Option 2: Matches the names we derived (lead(IV) chloride and nickel(II) bromide).
• Option 3: Incorrect (wrong naming format and uses nitrogen).
• Option 4: Incorrect (charges for lead and nickel are wrong).

Answer:

1. Lead(IV)chloride and Nickel(II)Bromide