Question

explain giving justification the trends in the following propestis,
of elements, on moving from it to right in a porod in the
modeon periodic table ?
Variation of Valency (b) change of comic sadius.
metallic to non-metulic character
Electronegativ chesucher
Nature of oxides​

Answer 1

Answer:

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.

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.

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