explain why there is a decrease in first ionisation energy between elements phosphorus and sulfur

The electrons are packed in singly occupied orbitals in the 3p subshell in phosphorus, however in sulfur, the 4th electron is placed into an orbital that already has an electron. Because electrons are negatively charged, they repel. This means it is easier to remove an electron and hence the first ionisation energy in sulfur is less than that in phosphorus

Answered by Sagar S. Chemistry tutor

8398 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

Explain how a coordinate bond forms


Define first ionisation energy


Without a catalyst, an alkene will react with bromine while benzene will not. Why is this?


Compare the structures of Diamond and Graphite, making references to the bonding, the shape of the structures, and location of the electrons within the structures. Account for the fact that graphite conducts electricity and diamond does not.


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