Chemistry A-Level
Ordering by atomic (proton) number
What Ordering by atomic (proton) number means in Chemistry A-Level, as defined for OCR.
Definition of Ordering by atomic (proton) number
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Reference: OCR
Elements are arranged in order of increasing atomic (proton) number, which is the ordering principle of the modern periodic table.
Topics that use Ordering by atomic (proton) number
- Periodicity (OCR A-Level)
Related terms
- Applying the sequence to specific elements
- atomic radius
- Cations and delocalised electrons
- delocalised electrons
- Distinction from mass number and relative atomic mass
- electrostatic attraction
- First ionisation energy
- Forces broken on melting
Using Ordering by atomic (proton) number in the exam
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