Why does the atomic radius decrease as you move along a period.
As you move along the period the proton number increases and the electrons are added to the same shell meaning no extra electron shielding occurs. Therefore the nuclear attraction to the outer most electron increases across the group and therefore the atomic radius decreases.
TM
Related Chemistry A Level answers
All answers ▸By considering the mechanism of the two step reaction of butanone and NaBH4 followed by dilute acid, explain why the product has no effect on plane polarised light.
give a possible reaction mechanism for the conversion of a haloalkane to alcohol
Why is cyclohexene able to react with bromine water, but Benzene isn't
Explain the trend in melting points of the period 3 elements