# The definition of 'shielding'

Now this relates to the berylium + Lithium thread i made earlier.. (although not entierly)

Is electron 'shielding' due to replusion between electron orbitals?

http://facultyfp.salisbury.edu/dfrieck/htdocs/212/rev/zeff/shielding.htm

I've had a look at this site, but in somewhat generalizes too much for me. Therfore, can i presume the electrons which occupy the 'inner' orbitals cancel out some of the values of the nuclear charge?

GCT
Homework Helper
You need to read up more on the topic of effective nuclear charge (Z). Browse through the index of your text.

Why does electronegativity increase as you move across a specific row of the periodict table?

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Ill certainly do that, however, it seems to me the textbooks i have (provided from school) generalizes too much, just saying 'electron shielding causes lower ionisation energy...etc'

I just got a new book (which seems good) so ill read through it, however, it would be appreciative to have one here..

Gokul43201
Staff Emeritus