Question

What kind of the changes in (i) Atomic size (ii) Metallic properties are observed in modern
periodic table while going from : (i) Top to Bottom (ii) Left to Right.​

Answer 1

Answer:

I) Atomic size of atoms across a group from top to bottom increases, atomic size of atoms across a period from left to right decreases (exception:noble gas atoms)

II)Metallic property of atoms across a group from top to bottom increases, metallic property of atoms across a period from left to right decreases