Answer:5.4 g / 13.6 g *100
Explanation:Its is the correct answer
That would be correct as stated.
I don't know if you didn't gave a picture choice or if i didn't get the picture.
But lets call this atom A. Electron dot formula doesn't require Neutron and Protons, its main concern is valance elections.
So atom A has 5 electrons which means 2,3 it has 3 valance electrons. Its dot formula will become
:A.
I hope this helped.
The last one is the answer to your question. D is the answer
