PRACTICE WORKSHEET: VBT: COORDINATION COMPOUNDS

 

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Worksheet based on Valence Bond Theory (VBT) from the Coordination Compounds chapter for Class 12 (Fill-in-the-Blanks type):

Topic	Fill in the Blanks
1. Central Metal Ion	According to VBT, the central __________ ion in a coordination compound undergoes hybridization to form __________ orbitals.
2. Hybridization	The hybridization of central metal in [Co(NH₃)₆]³⁺ is __________, leading to an __________ geometry.
3. Inner Orbital Complex	Complexes where the central metal ion uses its __________ d-orbitals for hybridization are called __________ orbital complexes.
4. Outer Orbital Complex	Complexes where the central metal ion uses its __________ d-orbitals for hybridization are called __________ orbital complexes.
5. Diamagnetism	Complexes in which all electrons are paired exhibit __________ behavior.
6. Paramagnetism	Complexes with unpaired electrons exhibit __________ behavior.
7. Low Spin Complex	Low spin complexes are formed in the presence of __________ field ligands, which cause __________ pairing of electrons.
8. High Spin Complex	High spin complexes are formed in the presence of __________ field ligands, resulting in __________ pairing of electrons.
9. Example of sp³ Hybridization	An example of a complex with sp³ hybridization is __________, which has a __________ geometry.
10. Example of d²sp³ Hybridization	The complex __________ exhibits d²sp³ hybridization and has an __________ geometry.
11. Magnetic Properties	The magnetic properties of a coordination compound depend on the number of __________ electrons in the d-orbitals of the central metal ion.
12. Geometry of [Ni(CN)₄]²⁻	The geometry of the [Ni(CN)₄]²⁻ complex is __________, which is explained by __________ hybridization.
13. Hybrid Orbitals in Octahedral Complexes	In an octahedral complex, the central metal ion undergoes __________ hybridization, involving one s, three p, and two __________ orbitals.
14. Valence Bond Theory Assumption	VBT assumes that the bonding in coordination compounds is due to the overlap of __________ orbitals of the central metal ion with those of the ligands.
15. Limitations of VBT	VBT fails to explain the __________ of coordination compounds and does not provide a detailed explanation of their __________ behavior.

This tabulation will help students focus on key concepts related to Valence Bond Theory (VBT) for coordination compounds.