Question

Atomic radius goes on decreasing while going from left to right in a period

Answer 1

on moving left to right.... no. of electrons as well as protons increases but no. of shell remains same so when both electrons and protons are increasing simultaneously then being unlike they attract each other and being lighter electrons moves towards nucleus and hence size decreases

Answer 2

yes on moving from left to right in a period atomic size decreases due to increase in effective nuclear charge and increase on moving from top to bottom its group due to additional new shells.

l hope you will understand..