SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the geometry for CO32-
A
linear
B
trigonal pyramidal
C
trigonal planar
D
tetrahedral
Explanation: 

Detailed explanation-1: -With three bonding groups around the central atom, the structure is designated as AX 3. 4. We see from Figure 10.3. 3 that the molecular geometry of CO 3 2− is trigonal planar with bond angles of 120°.

Detailed explanation-2: -Statement 1 : NO3^-and CO3^2-are planar species.

Detailed explanation-3: -Carbonate Ion: The carbon and oxygen are bonded through a double bond which counts as “one electron pair” and two single bonded oxygens. Hence the molecule has three electron pairs and is trigonal planar geometry.

Detailed explanation-4: -NOTES: This molecule is made up of 3 equally spaced sp2 hybrid orbitals arranged at 120o angles. The shape of the orbitals is planar triangular. Since there is an atom at the end of each orbital, the shape of the molecule is also planar triangular.

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