MCQ : Long form of periodic table based on

Question

Long form of periodic table based on –

1. atomic number
2. atomic mass
3. number of neutrons
4. none of these

Answer

(a) Atomic Number

Explanation:

The long form of the periodic table is based on the atomic number of the elements. The elements are arranged in order of increasing atomic number, which is the number of protons in the nucleus of an atom.