Why are noble gases unreactive?

Answer and explanation

Correct answer: D. They have a full outer shell of electrons

  1. Step 1: Reactivity depends on gaining or losing electrons. Step 2. A full outer shell is stable. Answer: They have a full outer shell of electrons. Why not the others: Group 1 atoms have a single outer electron.

Practise more Atomic Structure and Periodic Table.

Free questions with an explanation for every one, and full timed UK GCSE mock tests.