The vertical columns on the periodic table are called groups or families<span> because of their similar chemical behavior. All the members of a </span>family<span> of </span>elements<span> have the</span>same<span> number of valence electrons and similar chemical properties</span>
They have the same number of protons
Answer:
the powerhouse of the cell
Explanation:
jk its called adenosine triphosphate
