Concept explainers
(a)
Interpretation:
The number of protons, neutrons, and electrons in a neutral atom of
Concept introduction:
The expression of isotope is given by:
Where, X = element, A = mass number and Z =
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.
For neutral atom, number of protons is equal to the number of electrons.
(b)
Interpretation:
The number of protons, neutrons, and electrons in a neutral atom of
Concept introduction:
The expression of isotope is given by:
Where, X = element, A = mass number and Z = atomic number
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.
For neutral atom, number of protons is equal to the number of electrons.
(c)
Interpretation:
The number of protons, neutrons, and electrons in a neutral atom of
Concept introduction:
The expression of isotope is given by:
Where, X = element, A = mass number and Z = atomic number
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.
For neutral atom, number of protons is equal to the number of electrons.
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Chemistry: Principles and Reactions
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- There are 2.619 1022 atoms in 1.000 g of sodium. Assume that sodium atoms are spheres of radius 1.86 and that they are lined up side by side. How many miles in length is the line of sodium atoms?arrow_forwardTwo elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law of multiple proportions. If the formula of the second compound is RQ, what is the formula of the first compound?arrow_forwardA hypothetical element X is found to have an atomic weight of 37.45 amu. Element X has only two isotopes, X-37 and X-38. The X-37 isotope has a fractional abundance of 0.7721 and an isotopic mass of 37.24. What is the isotopic mass of the other isotope?arrow_forward
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