If the internuclear distance in AgI is 254.5 pm and the dipole moment is 4.55 D, calculate the percent ionic character of AgI.

Each of the molecules below exist as a solid at room temperature, except one. Identify the exemption.

Removing 2 electrons from Mg to form Mg²⁺ and adding 2 electrons to S to form S^2- requires energy. However, MgS is still relatively stable compared to free elements. Identify the statement that best explains this phenomenon.

(i) MgS is stable at normal temperature

(ii) The enthalpy of formation of MgS is very high.

(iii) MgS has a higher molar mass than either Mg or S. 

(iv)  The processes described are not relevant to MgS because it does not exist.

(v) The lattice energy of MgS is large enough to overcome the energy needed for the ionization of the elements.

Consider an unknown compound made with elements A and B with a chemical formula AB. Is the compound likely to be ionic or covalent if its boiling point is 1,465 °C?

Determine if these compounds are ionic or molecular.

Ag₂O         PCl₃        CO₂          CaS

Choose the compound that contains both ionic and covalent bonds.