The correct answer is and . If you divide all atoms of by factor 4 it gives which is not the same as .
If you divide all atoms of by 3 you get the other pair
If you divide all atoms of by 4 you get the other pair
and if you divide all atoms of by 3 you get the other pair
Answer:
Because each atomic number is unique.
Explanation:
Atomic number = No. of protons in an element
Each atomic number in each element is unique and that makes it easier to distinguish it between several elements.
D.