Chemistry (AS Level)·Transition elements · NSSCAS 3.3.1
Transition Elements: Characteristics
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The transition metals are the colourful, catalytic heart of the Periodic Table. Learn the proper definition of a transition element, how to write their electron configurations, and how their signature properties — variable oxidation states, catalytic activity and coloured compounds — all flow from their incomplete d orbitals, plus how they compare with an s-block metal like calcium.
What you'll learn in this lesson
By the end you should be able to (NSSCAS Chemistry (AS Level) 3.3.1):
- Explain what is meant by a transition element in terms of d-block elements forming ions with incomplete d orbitals
- Represent the electronic configurations of transition elements using s, p, d notation and electrons-in-boxes
- Recognise that transition elements show variable oxidation states, act as catalysts and form coloured compounds, linked to incomplete d orbitals
- Contrast the melting points and densities of transition elements with calcium as a typical s-block element
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