Concept explainers
Xenon An isotope of xenon has an
Interpretation:
Mass number of xenon isotope needs to be calculated, if atomic number is 54 and there are 77 neutrons present in an atom.
Concept introduction:
Mass number is the sum of number of protons and neutrons present in the nucleus of an atom.
Answer to Problem 69A
Explanation of Solution
Atomic number of an atom is also referred as number of protons in an atom.
Atomic number = Number of protons
Number of protons = 54
Mass number is the total number of protons and neutrons present in the nucleus of an atom.
Mass number of xenon isotope is 131.
Xenon isotope with Atomic number 54 and 77 neutrons have mass number of 131.
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