Covalent network crystals usually have the highest melting points and boiling points.
Water, Water is not a pure substance. It is a mixture, and Chromatography
2-7-18-7 because selenium atom would have a total of <span>a total of 34 electrons. Hope this helps!!</span>
Answer:
Hydrogen ion concentration is more conveniently expressed as pH, which is the logarithm of the reciprocal of the hydrogen ion concentration in gram moles per liter. Thus, in a neutral solution the hydrogen ion (H+) and the hydroxyl ion (OH−) concentrations are equal, and each is equal to 10−7. A pH of 7 is neutral