Unit 4: Periodic Table Trends

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5 Terms

1

Atomic Radius

down and left, distance from center of nucleus to v.e. shell, info about atoms size.

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2

Effective Nuclear Charge

to the left, the pull of pos nucleus on neg. electrons (opposites attract)

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3

Shielding Effect

when there are multiple orbits, the electrons on inner orbits protect electrons on valence shell.

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4

Electronegativity

right and up, measure of how strongly atoms attract bonding electrons to themselves. the higher the en, the greater the attraction. noble gasps have no electronegativity, halogens have higher electronegativity.

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5

Ionization Energy

right and up, measure of difficult removing an electron higher ie= hold onto electrons stronger.

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