Question

Students Ram, Shyam, and Raj measured the radius of an element A. The values of their practical were not the same
(Ram = 110 nm, Shyam = 190 nm and Raj = 108 nm).

Their teacher explained that their measurement was correct by saying that the recorded values are

• A. Metallic, Van der Waals and covalent radii respectively
• B. Covalent, Metallic and Van der Waals radii respectively
• C. Van der Waals, Metallic and covalent radii respectively
• D. None of the above

Answer 1

The correct option is A

Metallic, Van der Waals and covalent radii respectively

The increasing order of atomic radii - covalent radius $<$ metallic radius $<$ vander waals radius