Chemistry / Unit 6 Chem 0972 short lesson, about 20 seconds
Electronegativity's Periodic Trend
Captions available
The idea
Electronegativity rises across a period and falls down a group, tracking the same effective-nuclear-charge mechanism as ionization energy.
In practice
Fluorine, top right of the trend, has the highest electronegativity of any element; francium, bottom left, has among the lowest.
Where people slip
Electronegativity is a bonding tendency read from position, not a measured energy the way ionization energy is.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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