Protons, neutrons and electrons are types of subatomic particles.
(a)[3]
Fill in the table so that the relative mass and relative charge of a proton, a neutron and an electron are shown.
(b(i))[2]
Define the term isotope.
(b(ii))[2]
Explain why the two bromine isotopes have the same chemical properties.
(c)[5]
Complete the table.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “the proton has a relative mass of 1 and a relative charge of +1” …