Use words from the box to complete the sentences below about positive ion formation.
| inner | gaining | losing | outer | sharing |
Atoms can form positive ions by .................... electrons.
These electrons are lost from the .................... shell of the atom.
81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.