A nuclide of iron contains 26 protons and 30 neutrons.
Which symbol represents this nuclide?
5626Fe^{26}_{56}\text{Fe}5626Fe
2630Fe^{30}_{26}\text{Fe}2630Fe
5630Fe^{30}_{56}\text{Fe}5630Fe
2656Fe^{56}_{26}\text{Fe}2656Fe
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.