Concept explainers
(a)
Interpretation: Name of the given polyatomic anions is to be given.
Concept Introduction: A polyatomic ion is a charged specie consisting of more than one atom. The given anion is an oxoanion. An oxoanion is specie consisting of a metal or a nonmetal bonded to oxygen atoms. When a metal/nonmetal forms two oxoanions , the one with more oxygen atoms ends in ‘ate’ and the one with less oxygen atoms ends in ‘ite’.
(a)
Answer to Problem 21A
The name of polyatomic anion is permanganate ion.
Explanation of Solution
It is an oxoanion of Manganese. Manganese forms two oxoanions. Both have same number of oxygens. So the name ends in ‘ate’.
(b)
Interpretation: Name of the given polyatomic anions is to be given.
Concept Introduction: A polyatomic anion consists of two or more than one atom. Peroxides are a class of compounds having an R-O-O-R bond where R is an alkyl group.
(b)
Answer to Problem 21A
The name of polyatomic anion is peroxide ion.
Explanation of Solution
After losing the two R groups, R-O-O-R becomes O22- . Thus the name is peroxide ion.
(c)
Interpretation: Name of the given polyatomic anions is to be given.
Concept Introduction: A polyatomic ion is charged specie consisting of more than atom. The given anion is an oxoanion.An oxoanion is a specie consisting of a metal or a nonmetal bonded to oxygen atoms. When a metal/nonmetal forms two oxoanions, the one with more oxygen atoms ends in ‘ate’ and the one with less oxygen atoms ends in ‘ite’.
(c)
Answer to Problem 21A
The name of polyatomic anion is Chromate ion.
Explanation of Solution
It is an oxoanion of Chromium. Chromium forms two oxoanions. Both have same number of oxygen atoms per Chromium atom. So the name ends in ‘ate’.
(d)
Interpretation: Name of the given polyatomic anions is to be given.
Concept Introduction: A polyatomic ion is charged specie consisting of more than atom. The given anion is an oxoanion.An oxoanion is specie consisting of a metal or a nonmetal bonded to oxygen atoms. When a metal/nonmetal forms two oxoanions, the one with more oxygen atoms ends in ‘ate’ and the one with less oxygen atoms ends in ‘ite’.
(d)
Answer to Problem 21A
The name of polyatomic anion is Dichromate ion.
Explanation of Solution
It is an oxoanion of Chromium. Chromium forms two oxoanions. Both have same number of oxygen atoms per Chromium atom. So the name ends in ‘ate’.
Chapter 4 Solutions
World of Chemistry, 3rd edition
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