NCERT Class 11 Science — Chapter 2: Chemical Bonding and Molecular Structure

Which of the following molecules has a zero dipole moment due to its symmetrical linear structure?

Which pair of noble gases is explicitly known to form chemical compounds with fluorine and oxygen?

Which type of bond is formed by the electrostatic attraction between positive and negative ions?

For main group elements, the group valence is generally equal to:

Consider the following statements regarding atoms and molecules: 1. Under normal conditions, halogens are the only elements that exist as independent atoms. 2. A molecule is a group of atoms existing together as one species with characteristic properties. Which of the statements given above is/are correct?

Which of the following molecules is paramagnetic according to Molecular Orbital Theory?

Consider the following statements about atomic radii: 1. Covalent radius is defined as the total distance between the nuclei of two bonded atoms. 2. van der Waals radius is half the distance between two identical atoms in separate molecules in a solid. 3. The van der Waals radius is generally larger than the covalent radius. Which of the statements given above is/are correct?

Who introduced the term ‘covalent’ to describe the sharing of electrons between atoms?

In a Lewis symbol, what do the dots surrounding the element symbol represent?