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

How metallic character vary on moving from left to right along a period?

How do the metallic character and non metallic character vary while moving from left to right in a period? Arriving at a conclusion by assessing the size of atom?

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

Write the number of period the modern periodic table has. How do the valency and metallic character of elements vary on moving from left to right in a period ? How do the valency and atomic size of elements vary down a group ?

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 metallic character of elements vary on moving from : (i) Left to right in a period ? (ii) From top to bottom in a group ? Give reasons for your answers.

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