Explain why first ionisation energy decreases down a group.

As you go down the group, ionisation energy decreases because there are more electron shells and shielding increases, therefore the outer electron is further away from the positive nucleus and is less strongly attracted to it.

Answered by Ifsa A. Chemistry tutor

2620 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

NaOH is a strong base. An aqueous solution is made containing 0.300mol.dm^-3 of NaOH at room temperature. Calculate the pH of this solution.


Define the standard enthalpy of formation


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


Carbon dioxide is a gas at room temperature while silicon dioxide is a solid at room temperature with a melting point of 1770°C. Explain this by comparing their particles and those forces between these particles.


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