The periodic classification is an arrangement of the elements
A. atomic weights B. isotopic weights C. molecular weights D. atomic numbers
Correct Answer: D
Explanation
Elements in the periodic table are arranged according to their atomic number (proton number). Electronegativity increase from left to right while atomic radius increases down the group Elements in the periodic table are arranged according to their atomic number (proton number). Electronegativity increase from left to right while atomic radius increases down the group
