QQuestionChemistry
QuestionChemistry
"Give the nuclear symbol (isotope symbol) for the isotope of bromine, Br, that contains 46 neutrons per atom.
A. 80Br
B. 81Br
C. 82Br
D. 83Br"
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Answer
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Step 1:: Determine the number of protons in a bromine atom.
Bromine (Br) is the 35th element in the periodic table, so it has 35 protons.
Step 2:: Calculate the mass number of the isotope.
The mass number is the sum of the number of protons and neutrons in an atom. Since we are given that there are 46 neutrons in the bromine atom, we add this to the number of protons: mass number = protons + neutrons = 35 + 46 = 81
Step 3:: Find the nuclear symbol (isotope symbol) of the isotope.
The nuclear symbol is represented by the element symbol (Br) followed by the mass number (81). The atomic number (number of protons) is implicit in the element symbol, so it is not necessary to include it in the nuclear symbol.
Final Answer
The nuclear symbol for the isotope of bromine with 46 neutrons is 81Br.
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