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GCSE Chemistry · key term
The combining power of an element, shown by how its atoms combine with atoms of other elements.
Used by Edexcel and OCR
Specification 1.13 · Paper 1, Paper 2
Revise: Mendeleev's ArrangementElements that had the same valency, reacted in similar ways or formed compounds with similar formula patterns were evidence of a chemical family.
Specification C2.3a · Paper 1 (Foundation), Paper 3 (Higher)
The number of bonds that an atom can form; carbon has a valency of four in the structures considered here.
Refer to the properties of both the elements and their compounds. For example, similarities in reactivity, valency and the formulae of compounds helped reveal families of elements.
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