Question

9) Atomic number of Sodium is eleven then
number of valence electron
1) Two
2) one
3) Four
4) Zero​

Answer 1

Answer:

one is the correct answer

plz mark as branliest

Answer 2

2nd Option, ONE

Let me tell you how. You see, valence electrons means electrons in the outermost shell.

Now, it is given that atomic number is 11.

So, when you write the Electronic Configuration of Sodium, it would be like this:-

2, 8, 1

You can see that there is ONE electron is in the M shell, I.e, the outermost shell.

So, your answer is One...