Chapter 4, Problem 27A

(a)

Interpretation Introduction

Interpretation: Formula of binary compound carbon dioxide is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is CO₂.

Explanation of Solution

Carbon is more electropositive than oxygen. So it is written first in the formula. Also, one atom of carbon combines with two oxygen atoms as a result of which formula becomes CO₂.

(b)

Interpretation Introduction

Interpretation: Formula of binary compound sulfur dioxide is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is SO₂.

Explanation of Solution

Sulfur is more electropositive than oxygen. So it is written first in the formula. Also, one atom of sulfur combines with two oxygen atoms as a result of which formula becomes SO₂.

(c)

Interpretation Introduction

Interpretation: Formula of binary compound dinitrogen tetrachloride is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is N₂Cl₄.

Explanation of Solution

Nitrogen is more electropositive than oxygen. So it is written first in the formula. Also, two atoms of nitrogen combine with four chlorine atoms as a result of which formula becomes N₂Cl₄.

(d)

Interpretation Introduction

Interpretation: Formula of binary compound carbon tetraiodide is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is CI₄.

Explanation of Solution

Carbon is more electropositive than oxygen. So it is written first in the formula. Also, one atom of carbon combines with four iodine atoms as a result of which formula becomes CI₄.

(e)

Interpretation Introduction

Interpretation: Formula of binary compound phosphorus pentafluoride is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is PF₅.

Explanation of Solution

Phosphorus is more electropositive than fluorine. So it is written first in the formula. Also, one atom of phosphorus combines with five fluorine atoms as a result of which formula becomes PF₅.

(f)

Interpretation Introduction

Interpretation: Formula of binary compound diphosphorus pentaoxide is to be given.

Concept Introduction: The element which is relatively more electropositive of the two elements is written first followed by the element with a negative oxidation state. Prefixes such as di, tri, tetra, penta, etc. are used in cases where nonmetals form more than one binary compound.

Answer to Problem 27A

The formula of the compound is P₂O₅.

Explanation of Solution

Phosphorus is more electropositive than oxygen. So it is written first in the formula. Also, two atoms of phosphorus combine with five oxygen atoms as a result of which formula becomes P₂O₅.