Question

how to find valency with mathod on notebook​

Answer 1

Answer:

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. All noble gases except for Helium have eight electrons.

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Answer 2

Answer:

example

Explanation:

I have oxygen 2,6

so it's valency is 8 - 6 =2

and I have li 2,1

so it's valency is 1

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