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

13423 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

What is electronegativity?


In terms of the structure and boiling point of graphite, explain why the melting point is high


What is the standard enthalpy change of formation and how does it differ from the standard enthalpy change of reaction?


What is the order of decreasing acidity for the molecules phenol, ethanoic acid and ethanol? Why?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning