
(a)
Interpretation: The name of the given compound needs to be stated.
Concept Introduction: While naming a molecular compound the name of the first element is named first followed by that of the second element. The number of atoms of each element present in the compound is added as a prefix.
(a)

Answer to Problem 72A
The name of the given compound is diphosphorus pentoxide.
Explanation of Solution
Given compound contains two phosphorous atoms and five oxygen atoms, the name of the first element phosphorous with the prefix ‘di’ is written followed by the name of the second compound oxide with the prefix ‘penta’.
(b)
Interpretation: The name of the given compound needs to be stated.
Concept Introduction: While naming a molecular compound the name of the first element is named first followed by that of the second element. The number of atoms of each element present in the compound is added as a prefix.
(b)

Answer to Problem 72A
The name of the given compound is carbon tetrachloride.
Explanation of Solution
Given compound contains a carbon atom and four chlorine atoms, hence the name carbon tetrachloride. The prefix ‘tetra’ is used to denote four.
(c)
Interpretation: The formula of the given compound needs to be stated.
Concept Introduction: While naming a molecular compound the name of the first element is named first followed by that of the second element. The number of atoms of each element present in the compound is added as a prefix.
(c)

Answer to Problem 72A
The formula of boron trichloride is
Explanation of Solution
The symbol of the first element is written followed by the second element. Since there are three chlorine atoms, subscript 3 is written.
(d)
Interpretation: The formula of the given compound needs to be stated.
Concept Introduction: While naming a molecular compound the name of the first element is named first followed by that of the second element. The number of atoms of each element present in the compound is added as a prefix.
(d)

Answer to Problem 72A
The compound dinitrogen tetrahydride can be represented by the chemical formula
Explanation of Solution
In the given compound, there are two nitrogen atoms and four hydrogen atoms. It is represented by writing their symbols with corresponding subscripts.
Chapter 9 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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