QQuestionChemistry
QuestionChemistry
"A chlorine atom that has 17 protons and 18 neutrons is called what?"
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Answer
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Step 1:: Identify the number of particles in a chlorine atom.
A chlorine atom has 17 protons and 18 neutrons. Protons and neutrons are located in the nucleus of an atom and are collectively known as nucleons.
Step 2:: Recall the definition of an isotope.
Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei. They have the same number of protons, which defines the element, but a different number of neutrons.
Step 3:: Understand the naming convention for isotopes.
Isotopes are named by stating the name of the element followed by the mass number. The mass number is the sum of the number of protons and neutrons in the nucleus.
Step 4:: Calculate the mass number for the given chlorine atom.
The mass number is the sum of protons and neutrons. In this case, there are 17 protons and 18 neutrons. So, the mass number is 17 (protons) + 18 (neutrons) = 35.
Step 5:: Apply the naming convention to the given chlorine atom.
Since this is a chlorine atom with a mass number of 35, we can write its symbol as $$^{35}_{17}mathrm{Cl}$$.
Final Answer
The given chlorine atom is called chlorine- 35, denoted as ^{35}_{17}mathrm{Cl}.
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