Answer Happy

Please help me with this question, It's my second time askingthis, because the last guy who answered it didn't give me anyexplanation whatsoever, please especially explain the part aboutthe "Type of orbitals used for the sigma bonds and nonbondingelectrons"
thank you so much in advance!
5-2. For each of the molecules shown in the Lewis structures below: (1) List every central atom in the molecule/ion, and for each central atom, identify the following: Ideal bond angle Geometry name Type of orbitals used for the sigma bonds and nonbonding electrons (2) ● ● Sketch the geometry showing approximately correct angles. Draw "sticks" with dots at the end for nonbonding electrons for the central atoms. You do not need to show nonbonding electrons for non-central atoms. Molecules: a. :0: :Cl-C-N-H | H b. 0=N_0_ci: C. 0= Si = Se