The temperature at which a solid melts is the same as the temperature at which its liquid form solidifies (true or false)

True I think so

Explanation:

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The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium. For water, this equilibrium occurs at 0°C.

Cl, S, Si, Mg, Na

Explanation:

The ionization energy is the minimum amount of energy required to remove the most loosely bound electron of an isolated neutral gaseous atom. In the periodic table, it increases from left to right and from bottom to top.

All the elements are in the same period, so the ionization energy is higher in higher groups.

The order from highest to lowest ionization energy is:

Cl, S, Si, Mg, Na