Why the oxides of Group 2 metals have high melting points?

Give Reason. Most of the transition metals have high melting point and boiling point.

Give reason : (i) Most of the transition metals have high melting point and boiling point (ii) 2^(nd) ionization enthalpy of Cu is exceptionally high. (iii) atomic size of 4d- and 5d-series elements are almost the same.

Why do ionic compounds have high melting point ?

The oxides of non-metals are usually

Why do ionic compounds have high melting points ? State reason.

Write symbols of cation and anion present in MgO. Why do ionic compounds have higher melting points ?