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(a)
Interpretation:
The chemical formula of the magnesium sulfate is to be stated.
Concept Introduction:
A chemical formula of a given compound is used to describe the number of atoms present in it. Since a compound is made of two or more than two different elements in definite proportion, a chemical formula can best describe the number of elements it contains with their atomic symbols.
(a)
Answer to Problem 6.57FU
The chemical formula of magnesium sulfate is MgSO4.
Explanation of Solution
Magnesium is a second group element belonging to the alkaline earth metal family. To obtain stable noble gas configurationit loses two electrons and forms Mg2+.
Sulfate ion is a polyatomic ion which is composed of one sulfur and four oxygen atoms.It carries a charge of -2.
Hence, in magnesium sulfate, magnesium transfers two of its electrons to sulfate ion which results in the formation of an ionic compound known as MgSO4.
(b)
Interpretation:
The chemical formula of tin (II) fluoride is to be stated.
Concept Introduction:
A chemical formula of a given compound is used to describe the number of atoms present in it. Since a compound is made of two or more than two different elements in definite proportion, a chemical formula can best describe the number of elements it contains with their atomic symbols.
(b)
Answer to Problem 6.57FU
The chemical formula of tin (II) fluoride is SnF2.
Explanation of Solution
Tin or ‘Sn’ is a fourteen group element belonging to the Carbon family. Hence ‘Sn’looses two of its electrons to form Sn2+. Fluorine is a seventeen group element belonging to the halogens family and is non-metallic in nature therefore it gains one electron to form F-.When the chemical formula of an ionic compound is written, the superscript which denotes the charge on the cation becomes the subscript of the anion and vice-versa.
The chemical formula of the resulting compound is SnF2.
(c)
Interpretation:
The chemical formula of aluminum hydroxide is to be stated.
Concept Introduction:
A chemical formula of a given compound is used to describe the number of atoms present in it. Since a compound is made of two or more than two different elements in definite proportion, a chemical formula can best describe the number of elements it contain with their atomic symbols.
(c)
Answer to Problem 6.57FU
The chemical formula of aluminum hydroxide is Al (OH)3.
Explanation of Solution
Aluminum or ‘Al’is a thirteen group element belonging to the Boron family. After losing three electrons from its valence shell Al forms trivalent Al3+ cation. Hydroxide ion is a diatomic ion which consists of oxygen and hydrogen atom bonded covalently and it carries a negative charge. When Al loses three electrons and results in Al3+,three OH gains one electron each and results in OH- to form an ionic compound named as Al (OH)3 or commonly known as aluminum hydroxide. When the chemical formula of an ionic compound is written, the superscript which denotes the charge on the cation becomes the subscript of the anion and vice-versa.
Thus, chemical formula of the resulting compound is Al (OH)3.
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Chapter 6 Solutions
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