Explain the variation in trends in period in following properties
Answers
Answer:
I guess your question 'following properties' justifies this question:-
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. (a) Variation of valency. (b) Change of atomic radius. (c) Metallic to non-metallic character. (d) Electronegative character. (e) Nature of oxides.
Explanation:
Properties of elements, on moving from left to right in a period, in the Modern Periodic Table:
(a) Variation in valency:
Valency of elements with respect to hydrogen increases arithmetically from 1 to 4 and back to 1.
(b) Atomic radius:
The atomic radius decreases on moving from left to right in a period.
(c) Metallic and Non-metallic Properties:
As the effective nuclear charge increases across the period, the tendency to lose the electrons will decrease.
So, the metallic character decreases across the period.
(d) Nature of oxides:
Oxides of elements in a period become progressively less basic and finally change to the acidic character.