Question

3. if number of electrons in an atom is 8 and the number of proton is also 8 then
(b) predict the valency of the element​

Answer 1

Answer:

Since the number of protons is 8 then it's electronic configuration would be 2,6

it needs 2 more electrons to attain the nearest noble gas configuration

hence its valency is 2

Answer 2

Answer:

The number of electrons in the atom is 8 since no. Of protons= no. of electrons

The valency of the element is 2-

Because the electronic configuration of the element is 2,6

So the last shell has 6 electrons and can take two more to become a stable compound. So the valency is 2 negative

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