Question

How electrons in outer layer decides conductivity of a substance?

Answer 1

hey frnd....
because current can only flow through electrons so electrons decide that the wire is conductive or not.

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Answer 2

$\huge\green{As-Salamu-Alykum}$

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There are bands formed in am atom that are

Valance band

Conduction band

If there are electrons in Conduction band then that substance will behave as a conductor and will allow current .

These electrons are free in conduction band , and moves freely , so we have studied that free electron cause current or flowing charge cause current .

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