The charge on a proton is eee.
What is the charge on an α\alphaα-particle (alpha particle) and what is the charge on an electron?
Charge on α\alphaα-particle: 2e2e2e; charge on electron: −e-e−e
Charge on α\alphaα-particle: 2e2e2e; charge on electron: eee
Charge on α\alphaα-particle: 4e4e4e; charge on electron: −e-e−e
Charge on α\alphaα-particle: 4e4e4e; charge on electron: −2e-2e−2e
170 exam-style questions on CIE IGCSE Physics 5.1.2a Composition of the nucleus and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.