A calcium ion has a double positive charge and a fluoride ion has a single negative charge.
Which statement is correct?
A fluorine atom gains an electron to form the fluoride ion.
A fluorine atom loses a proton to form the fluoride ion.
A calcium atom loses an electron to form the calcium ion.
A calcium atom gains two electrons to form the calcium ion.
114 exam-style questions on CIE IGCSE Physics 5.1.1a Structure of the atom and ions. Each one has a worked solution and a mark scheme showing where the marks go.