Question

please give the answer​

Answer 1

Answer:

Outermost shell.

HOPE THIS HELPS YOU...

Answer 2

Answer:

* Outermost shell *

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Explanation:

Let's take an example Sodium(Na)

Atomic Number of Sodium=11

Electronic Configuration =2, 8,1

So The valency of Sodium is 1 , As 1 is the electron which is present in the outermost shell.