Which of the following is/are soluble in ethanol?

The correct sequence of increasing covalent character is represented by

Which of the following represents the correct decreasing order of the melting points of calcium halides?

The order of solubility of lithium halides in non-polar solvents follows the order:

$NaF$ is the highest melting halide because it is the most ionic in nature. This is because the chosen halide has:

Which of the following statements are correct?
$(A)$ Both $LiCl$ and $MgCl_2$ are soluble in ethanol.
$(B)$ The oxides $Li_2O$ and $MgO$ combine with excess of oxygen to give superoxide.
$(C)$ $LiF$ is less soluble in water than other alkali metal fluorides.
$(D)$ $Li_2O$ is more soluble in water than other alkali metal oxides.
Choose the most appropriate answer from the options given below.