
(a)
Interpretation:
Plausible formula for
Concept Introduction:
Nominal mass may be defined as mass of most abundant isotope of a particular ion or molecule. For instance, carbon exist as two isotopes
(a)

Explanation of Solution
Odd nominal mass of 79 suggests there are odd numbers of
Hence number of
Since each
(b)
Interpretation:
Plausible formula for
Concept Introduction:
Refer to part (a).
(b)

Explanation of Solution
Odd nominal mass of 123 suggests there are odd numbers of
Natural abundance of
Hence number of
Since each
With 1
When five
(c)
Interpretation:
Plausible formula for
Concept Introduction:
Refer to part (a).
(c)

Explanation of Solution
Even nominal mass of 148 suggests there are even numbers of
Natural abundance of
Hence number of
Plausible formulas with 6
Plausible formulas with 7
(d)
Interpretation:
Plausible formula for
Concept Introduction:
Refer to part (a).
(d)

Explanation of Solution
Even nominal mass of 168 suggests there are even numbers of
Natural abundance of
Hence number of
Plausible formulas with 11
Plausible formulas with 12
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Chapter 21 Solutions
Exploring Chemical Analysis
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