Two elements have electronegativity of $1.2$ and $3.0$. The bond formed between them would be:

The atomic numbers of the elements $X, Y, Z$ are $a, a+1, a+2$ respectively. $Z$ is an alkali metal. The nature of bonding in the compound formed by $X$ and $Z$ is

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions:
$(a)$ $K$ and $S$
$(b)$ $Ca$ and $O$
$(c)$ $Al$ and $N$

Which bond in a molecule of ethyl magnesium bromide is ionic in nature?

Which among the following compounds shows the highest lattice energy?

Which pair will form the most stable ionic bond?