An atom in its ground state is excited when it absorbs a single photon of light. The atom then relaxes back to the ground state
by emitting two photons, the first, a red photon at 700 nm, and the second, an infrared photon at 1750 nm. What is the wavelength of the absorbed photon? 500 nm 1225 nm 700 nm 1950 nm 1750 nm
Strong Surface Tension, Covalent Bonds, Denser as a Liquid, Polar.
Explanation:
Water is a polar substance with strong surface tension. It is denser as a liquid than as a solid. A water molecule consists of a hydrogen atom covalently bonded to two oxygen atoms.