Which of the following forms the basis of the modern periodic table?
A. Atomic mass
B. Atomic number
C. Number of nucleons
D. All of these
Answer:B
Which of the following forms the basis of the modern periodic table?
A. Atomic mass B. Atomic number C. Number of nucleons D. All of these
Explanation: Modern periodic table is based on the atomic numbers of elements as according to the modern periodic law the properties of elements are a periodic function of their atomic numbers.