Question

name the element with the larger radius which belongs to the same period of oxygen give reason

Answer 1

neon is in the same period but has larger radius......due to fully filled shells...lithium is also larger due to effective nuclear charge

Answer 2

Along the period, Atomic radii increases, so Lithium is the largest element.

Lithium has the radius of 167 * 10^-10 cm.

when radius  of the element increases, its size also increases.

Lithium is the largest element in the oxygen group(i.e second period)