The atomic radii and ionic radii of three elements in Period 3 are given below. Element X: atomic radius $0.118\text{ nm}$, ionic radius $0.053\text{ nm}$ Element Y: atomic radius $0.099\text{ nm}$, ionic radius $0.180\text{ nm}$ Element Z: atomic radius $0.160\text{ nm}$, ionic radius $0.072\text{ nm}$ From these data, which statement is correct?
- AElement X has lower electrical conductivity than element Y.
- BElement Y has a higher melting point than element X.
- CElement Y and element Z react to form an ionic compound.
- DElement Z forms ionic compounds by gaining electrons.