Trends in Ionisation Energy (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is first ionisation energy?
What is first ionisation energy?
Energy to remove most loosely bound e⁻
Why is ionisation energy measured for gaseous atoms?
Why is ionisation energy measured for gaseous atoms?
Eliminates intermolecular force effects
What is the first ionisation energy of sodium?
What is the first ionisation energy of sodium?
kJ mol
What happens to ionisation energy down a group?
What happens to ionisation energy down a group?
Decreases
What is the screening effect?
What is the screening effect?
Inner e⁻ shield outer e⁻ from nucleus
What happens to ionisation energy across a period?
What happens to ionisation energy across a period?
Generally increases
Why does ionisation energy increase across a period?
Why does ionisation energy increase across a period?
Nuclear charge ↑, e⁻ added to same shell
Which elements have much higher ionisation energies?
Which elements have much higher ionisation energies?
Right side elements like F and Ne
Why does Be show higher ionisation energy than expected?
Why does Be show higher ionisation energy than expected?
Completely filled 2s sublevel
Why does N show higher ionisation energy than expected?
Why does N show higher ionisation energy than expected?
Half-filled 2p sublevel
What do successive ionisation energies provide evidence for?
What do successive ionisation energies provide evidence for?
Electron energy levels exist
Why are large jumps seen in successive ionisation energies?
Why are large jumps seen in successive ionisation energies?
Removal from inner energy levels