The first ionization energy of rubidium is 4.03 x 105 J/mol. Calculate the longest wavelength, in nanometers, of electromagnetic radiation that is capable of ionizing
an atom of Rb.
Write your answer using three significant figures.

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.