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Chapter 29: Problem 6

How many neutrons are found in a \(^{35} \mathrm{Cl}\) nucleus?

Short Answer

Expert verified
Answer: There are 18 neutrons in a \(^{35} \mathrm{Cl}\) nucleus.

Step by step solution

01

Determine the atomic number of Chlorine

From the periodic table, we find that the atomic number of Chlorine (Cl) is 17. This means that there are 17 protons in its nucleus.
02

Find the mass number of the isotope

The notation \(^{35} \mathrm{Cl}\) has a mass number of 35, which is the total number of protons and neutrons combined in the nucleus.
03

Calculate the number of neutrons

To find the number of neutrons, subtract the atomic number (number of protons) from the mass number (number of protons and neutrons combined), i.e., Neutrons = Mass number - Atomic number = 35 - 17 = 18. So, there are 18 neutrons in a \(^{35} \mathrm{Cl}\) nucleus.

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Most popular questions from this chapter

A sample of radioactive 214 83 Bi, which has a half-life of 19.9 min, has an activity of \(0.058 \mathrm{Ci} .\) What is its activity 1.0 h later?
(a) What is the mass defect of the 'H atom due to the binding energy of the electron (in the ground state)? (b) Should we worry about this mass defect when we calculate the mass of the \(^{1} \mathrm{H}\) nucleus by subtracting the mass of one electron from the mass of the \(^{1} \mathrm{H}\) atom?
Show that the spontaneous \(\alpha\) decay of \(^{19} \mathrm{O}\) is not possible.
The last step in the carbon cycle that takes place inside stars is \(\mathrm{p}+^{15} \mathrm{N} \rightarrow^{12} \mathrm{C}+(?) .\) This step releases \(5.00 \mathrm{MeV}\) of energy. (a) Show that the reaction product "(?)" must be an \(\alpha\) particle. (b) Calculate the atomic mass of helium-4 from the information given. (c) In order for this reaction to occur, the proton must come into contact with the nitrogen nucleus. Calculate the distance \(d\) between their centers when they just "touch." (d) If the proton and nitrogen nucleus are initially far apart, what is the minimum value of their total kinetic energy necessary to bring the two into contact?
Calculate the activity of \(1.0 \mathrm{g}\) of radium- 226 in Ci.
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