Question

how to calculate valency​

Answer 1

Answer:

Method to find Valency

If the number of electrons in the outer shell is between one to four, the compound is said to have positive valency. For compounds with electrons four, five, six, or seven, the valency is determined by subtracting the electron from eight.

Explanation:

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Answer 2

hi

to calculate valency you have to count the number of electrons in the outermost

shell .

let me give you an example

sodium 2,8,1 (how)? I think you know that

therefore it has 1 outermost shell

so its valency is 1.

hope you understand.