Excess of $Na^+$ ions in our system causes:

Which of the following carbonate salts is soluble due to a high entropy change?

How does the ionization energy of Group $1$ elements change down the group?

When substance $A$ reacts with water,it produces a combustible gas $B$ and a solution of substance $C$ in water. When another substance $D$ reacts with solution $C$,it produces the same gas $B$,even when reacting with dilute sulfuric acid at room temperature. $A$ gives a golden yellow flame in a Bunsen burner flame. What are $A, B, C,$ and $D$ respectively?

In the reaction $M + O_2 \to MO_2$ (superoxide),the metal $M$ is

Which of the following pairs will produce the same products upon reaction with water?