Edexcel GCSE Chemistry · 1CH0
Specification 1.31 · Paper 1, Paper 2
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GCSE Chemistry · key term
A pair of electrons shared between two atoms; it represents one covalent bond.
Used by Edexcel
Specification 1.31 · Paper 1, Paper 2
Check every bonding pair: it must contain two electrons and lie between the two bonded atoms.
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