the nuclear model

Question 1

what is niels bones discovery on the nuclear model

Answer 1

that electrons orbit the nucleus at specific distances
No he’s work agreed with the results of experiments by other scientists
we now call the orbits energy levels or shells

Question 2

what do we call the orbits of an atom

Answer 2

shells/ energy level

Question 3

years after niels bohr discovered the orbiting of the electrons, what was then discovered?

Answer 3

protons

the positive charge in the nucleus is due to tiny positive particles called protons

Question 4

what did james chadwick discover?

Answer 4

neutrons

he discovered that the nucleus has neutral particles (no charge) called neutrons

Question 5

where are neutrons?

Answer 5

in the nucleus

Question 6

why do atoms have no overall charge?

Answer 6

the number of electrons are the same as the number of protons

Question 7

what is the radius of an atom

Answer 7

0.1nm or 1x10^-10m)

Question 8

what is the radius of a nucleus?

Answer 8

1 x 10^-14

Question 9

what is the relative mass of a proton a neutron and an electron

Answer 9

relative mass :
proton = 1
neutron =1
electron = very small