Question

Reference to the long form of the periodic table fills in the blanks with appropriate words.

The chemical properties of an element are the periodic function of their --------.

Answer 1

Modern periodic table:

• The modern periodic table is an arrangement of all the elements known in accordance with their increasing atomic number and recurring chemical properties.
• It is a tabular display of 118 chemical elements which consists of horizontal rows called periods and vertical columns are called groups.

Atomic Number:

• The atomic number of an element is equal to the number of protons or electrons in the neutral atom.
• The physical and chemical properties of elements depend on the number of electrons and their arrangement.
• When elements are arranged in increasing order of their atomic numbers, similarities in properties of the elements appear at regular intervals.

Therefore, The chemical properties of an element are the periodic function of its atomic number.