Question

In the 'Modern Periodic Table', a zigzag line separates metals from
non-metals. Name any two borderline elements. What will be the atomic
size of the elements on the right hand side of this as compared to the
elements of the same period present on this line and why?​

Answer 1

Answer:

Atomic size decreases along the period due to increase in effective nuclear charge

So atomic size of right hand size elements would be less than left hand size elements (except noble gases)