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1


. Indicate the type of hybrid orbitals used by the central atom in PCl3.

A. sp
B. sp2
C. sp3
D. sp3d
E. sp3d2



2. What is the hybridization on the central atom in NO3- ?

A. sp
B. sp2
C. sp3
D. sp3d
E. sp3d2



3. In which one of the following molecules is the central atom sp2 hybridized?

A. SO2
B. N2O
C. BeCl2
D. NF3
E. PF5



5. The bond angle in Cl2O is expected to be approximately

A. 90.
B. 109.5.
C. 120.
D. 145.
E. 180.