Explain the trend in ionisation energy down group 2? (3)

• down group 2 the number of protons increases therefore the nuclear charge increases (protons are found in the nucelus and have a +1 charge)

• the number of shielding electrons increases (each member down has an extra shelf of electrons)

• the number of electrons in the outer shelf remains the same (all have 2)

• the force of attraction between the outer electrons and the nucleus decreases, (due to shiedling) therefore ionisation energy decreases (less energy required to remove the outer electron due to weaker electrostatic attraction between the nucleus and outer electrons)

FJ
Answered by Flora J. Chemistry tutor

13109 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

How do you form a Born-Haber cycle?


Explain why first ionisation energy decreases down a group.


What is Entropy?


Name and explain briefly the main stages of mass spectroscopy.


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