The compound having a tetrahedral geometry is .

The compound having tetrahedral geometry is

Ethers have tetrahedral geometry like

Predict the dipole moment of : (i) a molecule of the type AX_(2) having a linear geometry. (ii) a molecule of the type AX_(4) having tetrahedral geometry. (iii) a molecule of the type AX_(2) having angular geometry. (iv) a molecule of the type AX_(4) having square planar geometry.

Which of the following ions has tetrahedral geometry and sp^3 - hybridisation for its central atom ?