Printable worksheet · 2 of 4

Outer electrons help explain group behaviour - Paper 2

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

Read before answering

Early-element shell model: neutral chlorine has 17 protons and electron arrangement 2,8,7. Model ion formation by gaining 1 electron(s). Shell entries count electrons; they are not literal circular tracks. Proton number is unchanged.

Worksheet preview

This exercise is included in the paid course. Full-course fee: GBP 200.00 once. Register and enrol to complete all course exercises and download the course PDFs. Access begins after payment is confirmed.

Already registered? Sign in