Atoms are unstable unless they have a similar number of protons and neutrons. To make the carbon atom stable, add six neutrons to it. What’s the mass number now?

Which statement best describes the flow of energy in this scenario

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.