Atomic radius DECREASES ACROSS a PERIOD


	Atomic radius DECREASES ACROSS a PERIOD
	Causes no of protons increases across period - positive charge of nucleus increases - electrons are pulled closer to nucleus no shielding effect	Effects atomic radius smaller across period
	Overall summary EXAMPLE - Na atomic radius- 0.19nm - across period - Ar atomic radius - 0.07nm

no of protons increases across period - positive charge of nucleus increases - electrons are pulled closer to nucleus
no shielding effect

EXAMPLE - Na atomic radius- 0.19nm - across period - Ar atomic radius - 0.07nm

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