Among H2S, H2O, NF3, NH3, and CHCl3, identify the molecule (X) with the lowest dipole moment value. How many lone pairs of electrons are present on the central atom of this molecule (X)?

Consider superoxide O2− and peroxide O22−. Which statement is correct regarding their IR activity and magnetism?

The correct order of O–O bond lengths in O2, O2+, O2-, and O22- is:

In the ozone (O3) molecule, the correct formal charges on oxygen atoms numbered 2 (double-bonded terminal O), 1 (central O) and 3 (single-bonded terminal O) respectively are: