The notation represents the nucleus of a uranium atom:
92235U {}^{235}_{92}\text{U} 92235UThe relative charge on a proton is +1. What is the relative charge on the uranium nucleus?
+92+92+92
+143+143+143
+235+235+235
+327+327+327
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.