Question

What are the variations of valency,atom size and nonmetallic nature across the period and down the group in modern periodic table with the reason behind

Answer 1

Answer:

According to Modern periodic table,

Explanation:

Across the period:-

valency - first increases then decreases

atomic size - decreases

nonmetallic nature - increases

Down the group :-

valency - remains same

atomic size - Increases

nonmetallic nature - decreases

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