Answer:
D
Explanation:
beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative
Answer:
There's No Answer Im Sorry
It means that the fit and well adjusted ones thrive and "make it", and the weak ones that can't adapt die.
Protons and neutrons have most of the mass but occupy very little of the volume of the atom.
