Answer:
D
Explanation:
I hope this right, I'm sorry if it's not.
For an atom to be neutral, it has to have the same amount of protons and electrons. Because protons and electrons have opposite charges, when there is an equal amount of them they balance each other out
They are the elements from scandium to copernicium. The elements between group 2 and group 3
Atomic mass is equal to the total number of electrons neutrons and protons
The Milky Way is a SBc barred spiral galaxy.
<span>the highest ionization energy is Be, it is higher and righter than other elements in periodic table, so it harder to remove electron from its atom</span>
