Question

Hii guys Good morning. Please tell me the valency of all the elements according to their atomic no.

Answer 1

Answer:

Explanation:

When an atom or molecule has from one to four electrons in its outer shell, it has a positive valency, meaning it donates its free electrons. When the number of electrons is four, five, six or seven, you determine the valency by subtracting the electron number from 8. and for metals and non metals it is different thx

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he valency of an atom is equal to the number of electrons in the outer shell if that number is four or less. Otherwise, the valency is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valency.

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