Скачать или смотреть AICE Chemistry | Chapter 2.2: Evidence for Electronic Structure

This lecture covers Section 2.2: Evidence for Electronic Structure, from Chapter 2: Electrons in Atoms. We'll examine the powerful data from ionisation energies that validates our model of electron shells and reveals the secrets of an atom's configuration.

In this video, we will cover:

•Defining first ionisation energy (IE) and how to write equations for successive ionisations.

•Why successive ionisation energies for a single element always increase as more electrons are removed.

•How large jumps in successive ionisation energy graphs provide clear evidence for different electron shells.

•The four key factors that influence ionisation energy: nuclear charge, atomic radius, electron shielding, and spin-pair repulsion.

•Using ionisation energy data to deduce the electronic configuration and identify which group an element belongs to in the Periodic Table.

This video is designed to align with the Cambridge AICE Chemistry (9701) curriculum and is based on the official course textbook and lecture materials. Whether you're just starting your A-Level journey or need a quick review, this lesson is essential for accurately describing atomic structure.

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