The partial negative charge in a molecule of water occurs because ________. September 21, 2022 by 8i9x6 the oxygen atom donates an electron to each of the hydrogen atoms the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus the oxygen atom has two pairs of electrons in its valence shell that are not neutralised by hydrogen atoms one of the hydrogen atoms donates an electron to the oxygen atom See Answer the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus