How to find valancy of an …

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How to find valancy of an element.

Posted by Abcd Xyz 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Vanshika Panwar 4 years, 11 months ago

We can find it very easily with the help of its electronic configuration... Lets suppose we are having a element namely calcium... Its atomic no. Is 20 and therefore, its electronic configuration is 2, 8, 8, 2... Now we have to see the no. Which is on the last shell of the electronic configuration, I.e, 2... So hence, our valency of calcium is 2

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Kiran Kumari 4 years, 11 months ago

If theNo.of valance electron present in the last shell is 1, 2,3 then the valency of elements is also equal to 1,2, $3. If the no. Of valence electron in the last shell is 5,6, $7then then the valency is=8_no.of valece electron.

0Thank You

Secret ??? 4 years, 11 months ago

If the no of electrons present in the last shell is 1,2, 3 and 4 then the valency will be equal to no of electrons in the last shell. If the no of electron present in the last shell is 5,6,7 and 8 then to find valency we have to minus no of -e from 8

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CBSE > Class 10 > Science