Question

why does atomic radius change as we move left to right​

Answer 1

radii decreases becoz no. of electrons increase amd shielding increase which decreases the nuclear charge therefore size decrease

Answer 2

the atomic radius changes as we move left to eight because... the number of electrons in the valence shell increases.... which also increases the electrostatic pull towards the nucleus or the effective nuclear charge increases........due to the pull of electrons towards the nucleus ....the atom becomes smaller