Solution :
TIPS/Formulae :
Molecule having $$s{p^3}$$ hybridisation and one lone pair of electron will have pyramidal structure.
$$\left( {\text{i}} \right)CO_3^{2 - }$$ and $$NO_3^ - $$ have tetrahedron structure.
$$\left( {{\text{ii}}} \right)$$ In $$PC{l_3},P$$ is $$s{p^3}$$ hybridised and has one lone pair of electrons, hence it is pyramidal in shape.
Releted MCQ Question on Inorganic Chemistry >> Chemical Bonding and Molecular Structure
Releted Question 1
The compound which contains both ionic and covalent bonds is