What is the bond angle of H-C-H in methane molecule?

The enthalpy change that occurs when an atom in the ground state gains an electron, is electron gain enthalpy.

Electron gain enthalpy may be ____

Which of the following molecule doesn’t exist?

Which of the following is a condition for the combination of atomic orbitals?

Sharing or transfer of electrons from one atom to the other to attain stable octet configuration follows ___

What’s the amount of lattice energy of NaCl?

Ionic bonds easily form when electron when ionization energy of the metallic atom is _____ comparatively.