This option suggests that the metal chlorides formed when alkali metals react with chlorine gas are insoluble. However, this is not the case. Alkali metal chlorides are generally soluble in water.
When alkali metals react with chlorine gas, they form alkali metal chlorides that are soluble in water. The resulting solution is neutral, with a pH of around 7.
This option suggests that the metal chlorides formed in this reaction result in an acidic solution with a pH of 1. This is not typically the case for alkali metal chlorides.
This option suggests that the metal chlorides formed in this reaction result in an alkaline solution with a pH of 14. While alkali metals are known for forming alkaline solutions when dissolved in water, the resulting pH is not usually as high as 14.
The correct description for the metal chlorides formed when alkali metals react with chlorine gas is B. Soluble in water to give a neutral solution of pH 7.