Question

Arrange the following elements in the increasing order of their atomic number.

• A. Lithium
• B. Magnesium
• C. Fluorine
• D. Helium
• E. Nitrogen

Answer 1

Atomic number is the number of protons present in an element. It is represented by the symbol 'Z'.

The correct order of the elements in the increasing order of their atomic numbers is given below:
Helium (Z= 2) < Lithium (Z= 3) < Nitrogen (Z= 7) < Fluorine (Z= 9) < Magnesium (Z= 12).