
Interpretation:
The number of protons, neutrons and electrons in given species has to be identified.
Concept Introduction:
Mass number(A): Mass number of an element is sum of protons and neutrons of the atom.
Consider an element X with
Where, A is mass number and Z is atomic number (number of proton or electron)

Answer to Problem 2.15QP
Number of proton, neutron and electrons for given species are given as follows.
Isotopes | |||||||
No. of Protons | 2 | 2 | 12 | 12 | 22 | 35 | 78 |
No. of Neutrons | 1 | 2 | 12 | 13 | 26 | 44 | 117 |
Explanation of Solution
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
For
Thus, the number of neutrons, protons and electrons are found as
The number of protons, neutrons and electrons in given species were identified.
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Chapter 2 Solutions
Chemistry
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