The correct name for the compound Pb3(PO4)4 is (abzi 2) Lead (IV) phosphide Lead phosphide lead monophosphours lead (IV) phosphate

The Correct Answer and Explanation is :

The correct name for the compound Pb₃(PO₄)₄ is Lead(IV) phosphate.

Understanding the Formula: The formula Pb₃(PO₄)₄ represents a compound composed of lead (Pb) and phosphate ions (PO₄³⁻). In this formula, there are three lead atoms (Pb) and four phosphate ions (PO₄³⁻). To determine the proper name, we need to consider the oxidation state of lead and the nature of the phosphate ion.
Oxidation States: Lead (Pb) can have different oxidation states, commonly +2 or +4. The oxidation state of lead in a compound is determined by the balance of charges between lead and the anions (in this case, phosphate ions). Each phosphate ion (PO₄³⁻) has a charge of -3. Since there are four phosphate ions, the total negative charge is -12. To balance this, the total positive charge from the lead ions must be +12. This means that each lead ion in Pb₃(PO₄)₄ must have an oxidation state of +4. Hence, lead is in the +4 oxidation state in this compound.
Naming the Compound:

The cation is lead (Pb), and because lead is in the +4 oxidation state, it is named Lead(IV).
The anion is the phosphate ion (PO₄³⁻), which remains the same in both ionic and molecular compounds.
When naming ionic compounds, the oxidation state of the metal is included in parentheses, followed by the name of the anion. Therefore, the correct name is Lead(IV) phosphate.

Lead(II) phosphate would be correct if the oxidation state of lead were +2, but since it is +4 in this compound, this option is incorrect.
Lead phosphate is incomplete because it doesn’t specify the oxidation state of lead.
Lead phosphide refers to a compound with the formula Pb₃P₂ (in which lead would be in the +2 state, reacting with the phosphide ion, P³⁻), so this is not correct for Pb₃(PO₄)₄.
Lead monophosphorus is not a valid name for this compound.

Thus, the correct name is Lead(IV) phosphate.

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