Which electron in an atom (Z=17) is the most shielded from nuclear charge?
A. an electron in the 2s B. an electron in the 3p
C. an electron in the 3d D. an electron in the 1s

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.