Determine the number of electron groups around each central atom for each of the following geometry.
(i) Trigonal pyramidal
(ii) Seesaw
(iii) Square planar
(iv) T-shaped
(v) Linear
(vi) Trigonal planar

• A. (i) 5; (ii) 4; (iii) 6; (iv) 4; (v) 2 or 3; (vi) 3
• B. (i) 4; (ii) 6; (iii) 5; (iv) 6; (v) 2; (vi) 5
• C. (i) 4; (ii) 5; (iii) 6; (iv) 5; (v) 2 or 5; (vi) 3
• D. (i) 5; (ii) 4; (iii) 5; (iv) 4; (v) 2; (vi) 5

Answer: (C)