Describe and explain the trend in atomic radii across the periodic table

Atomic radii decreases in size, moving from left to right in the periodic table.
This is because atoms on the right hand side of a period have a larger number of protons. So, there is a greater positive charge for atoms on the right hand side, like Neon with which to attract negative electrons. This causes the electrons to be pulled in with more force towards the nucleus, decreasing the radius.

Related Chemistry A Level answers

All answers ▸

Explain Optical Isomerism


If hydrogen was burnt in a chamber full of oxygen, what would be the effect on the chamber pressure and why?


What is the definition of 'first ionisation energy'?


Describe and explain the trend of reactivity of group 2 metals with water


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences