Explain giving justification the trends in the following properties of elements

Periodic Classification of Elements (C10)

Explain giving justification the trends in the following properties of elements, on moving from left to right in a period, in the Modern periodic Table.

  1. Variation of valency.
  2. Change of atomic radius.
  3. Metallic to non-metallic character.
  4. Electronegative character.
  5. Nature of oxides.

Answer

a) Valency first increases, then decreases

b) Decreases

c) Increases

d) Increases

e) Changes from basic to acidic