An early model of the atom, proposed by rutherford after his discovery of the atomic nucleus, had a positive point charge +ze (the nucleus) at the center of a sphere of radius r with uniformly distributed negative charge −ze. z is the atomic number, the number of protons in the nucleus and the number of electrons in the negative sphere. show that the electric field inside this atom is : ein=ze4πϵ0(1r^2−rr^3). b. what is the electric field at the surface of the atom? is this the expected value? explain. c. a uranium atom has z = 92 and r = 0.10 nm. what is the electric field at r = r/2?

Part a)

Part b)

Yes it is the expected value of electric field at the surface of an atom

Part c)

Explanation:

Since negative charge of electrons in uniformly distributed in the atom while positive charge is concentrated at the nucleus

So the electric field due to positive charge of the nucleus is given as

now charge due to electrons inside a radius "r" is given as

now we will have electric field given as

now net electric field is given as

Part b)

At the surface of an atom

Yes it is the expected value of electric field at the surface of an atom

Part c)

If Z = 92

R = 0.10 nm

so we will have

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

talk back to him about the sport and show him your expertise or leave the room