Question

the image shows the unit cell for perovskite (catio4). it was discovered in 1839 in russia by gustav rose, and a compound with the same structure is used to manufacture solar cells. the melting point of perovskite is 1980°c. which statement explains why the melting point of perovskite is 1980°c? the melting point of perovskite is 1980°c because the sharing of electrons between atoms holds them far away from each other. the melting point of perovskite is 1980°c because the electrostatic attraction between atoms holds them far away from each other. the melting point of perovskite is 1980°c because the sharing of electrons between atoms holds them close together.

Explanation:

Perovskite is an ionic compound. Ionic compounds have high melting points due to strong electrostatic (ionic) bonds between ions. These bonds require a large amount of energy (high temperature) to break. Sharing of electrons (covalent bonds) would typically be associated with different properties (like in covalent - network solids or simple covalent molecules, but perovskite is ionic). And if atoms were held far away, the forces would be weaker (not the case for high - melting - point ionic compounds).

Answer:

The melting point of perovskite is \(1980^{\circ}C\) because the electrostatic attraction between atoms holds them close together.