Concept explainers
(a)
Interpretation:
The number of protons for the three isotopes of Tin has to be given.
Concept Introduction:
Protons:
A proton is one of three main particles that make up the atom. Protons are a tiny, dense region at the center of the atom. Protons have a positive electrical charge of
(a)
Explanation of Solution
Given,
The
Thus the number of protons for three isotopes of Tin (Tin-116, Tin-118 and Tin-120) is
(b)
Interpretation:
The number of neutrons for the three isotopes of Tin has to be given.
Concept Introduction:
Neutrons:
Atoms of all elements except for most atoms of hydrogen have neutrons in their nucleus. Unlike protons and electrons, which are electrically charged, neutrons have no charge they are electrically neutral.
(b)
Explanation of Solution
Given,
The mass number of three Tin isotopes is
The number of protons in three Tin isotopes is
The mass number of Tin -116 can be calculated as,
The mass number of Tin -116 is
The mass number of Tin -118 can be calculated as,
The mass number of Tin -118 is
The mass number of Tin -120 can be calculated as,
The mass number of Tin -120 is
(c)
Interpretation:
The number of electrons for the three isotopes of Tin has to be given.
Concept Introduction:
Electrons:
Electrons have an electric charge of
(c)
Explanation of Solution
Given,
The atomic number of Tin is
Thus the number of electrons for three isotopes of Tin (Tin-116, Tin-118 and Tin-120) is
(d)
Interpretation:
The group number of Tin has to be given.
(d)
Explanation of Solution
The Tin is placed as fourth element in group-14 of the periodic table and is considered among the main group elements.
(e)
Interpretation:
The isotopic symbol of three Tin isotopes has to be given.
(e)
Explanation of Solution
The isotopic symbol of Tin-116 is,
Given,
The atomic number is
The mass number is
The isotopic symbol of the Tin-116 is given by writing the atomic number on the subscript and the mass number on the superscript. Thus, the isotopic symbol of Tin-116 is
The isotopic symbol of Tin-118 is,
Given,
The atomic number is
The mass number is
The isotopic symbol of the Tin-118 is given by writing the atomic number on the subscript and the mass number on the superscript. Thus, the isotopic symbol of Tin-118 is
The isotopic symbol of Tin-120 is,
Given,
The atomic number is
The mass number is
The isotopic symbol of the Tin-120 is given by writing the atomic number on the subscript and the mass number on the superscript. Thus, the isotopic symbol of Tin-120 is
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