Question

complete the second cell of the fourth row by indicating the type of the compound.
formula
pbo₂
type of compound (ionic, molecular, acid)
——
name
——
type of compound:
ionic
molecular
acid
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part f

Explanation:

Step1: Identify Compound Type

$PbO_2$ consists of lead (Pb) and oxygen (O). Lead is a metal, and oxygen is a non - metal. Ionic compounds are typically formed between metals and non - metals, where electrons are transferred from the metal to the non - metal. Molecular compounds are usually formed between non - metals, and acids contain hydrogen as a cation. So, $PbO_2$ is an ionic compound.

Step2: Name the Ionic Compound

For ionic compounds with transition metals (like Pb, which can have multiple oxidation states), we use the Stock system. First, find the oxidation state of Pb. In $PbO_2$, let the oxidation state of Pb be $x$. Oxygen has an oxidation state of - 2. So, $x+2\times(- 2)=0$, which gives $x = + 4$. So the name of $PbO_2$ is lead(IV) oxide.

Answer:

Type of Compound: Ionic; Name: lead(IV) oxide