Library
Exercises
Games
Exams
Resources
Forum
News
Light
Log in
Sign up
Library
Exercises
Games
Exams
Resources
Forum
News
All courses
Library
The periodic table of elements
Reactivity of chemical families
MCQ
Why are noble gases (Group 18) almost always chemically inert?
Possible answers
Because they are too heavy to react
Because their outer electron shell is already full
Because they have no outer shell
Because they have only one electron
Log in to reply
Previous
Exercise 3 of 4
Next exercise
Report a mistake or suggest an improvement