PHYSICAClass 11 Chemistry simulations · Classification of Elements and Periodicity in Properties
Periodic trends
Raise the first 36 elements as bars to compare atomic radius, ionisation enthalpy or electronegativity across periods and down groups.
What to notice
Noble gases have the highest ionisation enthalpies; alkali metals the lowest. Radius shrinks across a period as nuclear charge rises.
Key relation
Across a period: radius ↓, ionisation enthalpy ↑, electronegativity ↑ ; down a group: the reverse
Try this
Why is the ionisation enthalpy of N higher than that of O?
What you can change
- Property: choose First ionisation enthalpy, Covalent radius, Electronegativity (Pauling)
- Highlight element Z: 1 to 36
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