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 ▸What is the structure of benzene?
What is the mechanism for nucleophilic addition reactions at carbonyls?
Calculate the percentage, by mass, of carbon in cyclohexane. Give your answer to two significant figures.
Describe the bonding in, and the structure of, sodium chloride and ice. Explain why they have very different melting points.