How does the metallic and non-metalic character vary on moving from left to right in a period?

Write the number of periods and groups in the Modern Periodic Table. How does the metallic character of elements vary on moving from left to right in a period, and

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Metallic character decreases and non-metallic character increases on moving from left to right in a period. Reason (R) : It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period. In the light of the above statements, choose the most appropriate answer from the options given below :

How does the metallic character of elements change on going from left to right in a period of the periodic table ?

How does the metallic character of elements vary on moving from from top to bottom in a period of the Modern Periodic Table ? Give reason for your answer.

Write the number of periods and groups in the Mordern Periodic Table. How the metallic character of elements vary on moving (a) form left to right in a period, and (b) down a group? Givew reason to justify your answer.

(a) How does the size of atoms (atomic size) generally vary in ging from left to right in a period of the periodic table? Why does it vary this way? (b) What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?