Consider the lead isotope .
a. How many electrons, protons, and neutrons are in a neutralatom?
b. The lead nucleus has a diameter of . What is the electric field strength at the surface of a lead nucleus?
a. In neutral number of neutrons are, number of protons are and the number of electrons are.
b. The electric field strength at the surface of the nucleus is.
We have to find that How many electrons, protons, and neutrons are in a neutral atom.
Start the solution by determining the proton number:
(from Periodic Table of Elements)
Putting the values
Here, is the atomic number, A is the mass number and N is the neutron number.
We have to find that the electric field strength at the surface of a lead nucleus.
The expression for the electric field of the point charge:
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