Question
Chemistry Question on Modern Periodic Law And The Present Form Of The Periodic Table
The long form of Periodic Table is based on
A
mass of the atom
B
atomic number
C
shapes of the atom
D
electronegativity
Answer
atomic number
Explanation
Solution
Modern periodic table (i.e. long form of table) is based on the periodic law which says that physical and chemical properties of the elements are periodic function of their atomic numbers.