(a)
Interpretation:
Among the following species, the species with equal numbers of neutrons and protons should be identified.
Concept introduction:
The
A form of chemical element having same atomic number but differ by mass number is known as isotopes. In nuclide notation of isotope, the mass number of the isotope is present in superscript in front of the
The expression is given by:
where, A = mass number and Z = atomic number
(b)
Interpretation:
Among the following species, the species in which protons contributing 50% of the mass.
Concept introduction:
The atomic number is equal to the number of protons of an element whereas sum of number of protons and number of neutrons is equal to mass number.
A form of chemical element having same atomic number but differ by mass number is known as isotopes. In nuclide notation of isotope, the mass number of the isotope is present in superscript in front of the symbol of given element and atomic number is present in subscript in front of the symbol of the element.
The expression is given by:
where, A = mass number and Z = atomic number
(c)
Interpretation:
Among the following species, the species which has about 50% more neutrons than protons should be identified.
Concept introduction:
The atomic number is equal to the number of protons of an element whereas sum of number of protons and number of neutrons is equal to mass number.
A form of chemical element having same atomic number but differ by mass number is known as isotopes. In nuclide notation of isotope, the mass number of the isotope is present in superscript in front of the symbol of given element and atomic number is present in subscript in front of the symbol of the element.
The expression is given by:
where, A = mass number and Z = atomic number
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General Chemistry: Principles and Modern Applications (11th Edition)
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- The average atomic masses of some elements may vary, depending upon the sources of their ores. Naturally occurring boron consists of two isotopes with accurately known masses ( 10B, 10.0129 amu and 11B, 11.0931 amu). The actual atomic mass of boron can vary from 10.807 to 10.8 19, depending on whether the mineral source is from Turkey or the United States. Calculate the percent abundances leading to the two values of the average atomic masses of boron from these two countries.arrow_forwardScientists J. J. Thomson and William Thomson (Lord Kelvin) made numerous contributions to our understanding of the atom’s structure. Which subatomic particle did J. J. Thomson discover, and what did this lead him to postulate about the nature of the atom? William Thomson postulated what became known as the “plum pudding” model of the atom’s structure. What did this model suggest?arrow_forward
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