An atom of element J has the electron arrangement 2.2.
Why does an atom of J lose two electrons when it reacts?
The loss leaves two electrons in a full second shell.
The loss removes two protons from the nucleus of J.
The loss leaves two electrons in a full first shell.
The loss gives J two more electrons than protons.
122 exam-style questions on OCR GCSE Chemistry 2.2 Bonding, covering 2.2.1 Metals, non-metals and the Periodic Table, 2.2.2 Types of chemical bonding and dot and cross diagrams, 2.2.3 Limitations of bonding models, and 2.2.4 Reactivity, atomic number and the modern Periodic Table. Each one has a worked solution and a mark scheme showing where the marks go.