Question

Match list I with list II:

List I	Species	List II	Geometry/ Shape
A	H3 O+	I	Tetrahedral
B	Acetylide anion	II	Linera
C	NH4 +	III	Pyramidal
D	ClO2–	IV	Bent

Choose correct answer from the options given below:

• A. A-I, B-II, C-III, D-IV
• B. A-IV, B-I, C-III, D-II
• C. A-II, B-IV, C-I, D-III
• D. A-III, B-II, C-IV, D-I

Hint:

Remember that the geometry of molecules is determined by the number of bonding pairs and lone pairs on the central atom, according to the VSEPR theory.

Answer 1

The Correct Option is A

- A. H\(_2\)O: Water has a bent shape due to the lone pairs on oxygen, making the geometry bent.
- B. Acetylene: Acetylene is a linear molecule with a triple bond between the carbons.
- C. NH\(_3\): Ammonia has a trigonal pyramidal shape due to the lone pair on nitrogen.
- D. ClO\(_2\): Chlorine dioxide is a bent molecule due to the lone pairs on chlorine.
Thus, the correct matching is A-I, B-II, C-III, D-IV.