Which of these statements is not true? question 20 options: atoms of isotopes of an element have different numbers of protons. atoms of the same elements can have different masses. atoms are mostly empty space. the nucleus of an atom has a positive charge. save?

Atoms of isotopes of an element have different numbers of protons. i took the test

it's all four options.

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.