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प्रश्न
Identify the type of overlap present in H-F molecule. Explain diagrammatically.
उत्तर
s–p σ overlap:
- In this type of overlap one half-filled s orbital of one atom and one half-filled p orbital of another orbital overlap along the internuclear axis.
e.g. Formation of HF molecule by s–p overlap:
Hydrogen atom (Z = 1) has electronic configuration: 1s1 and fluorine atom (Z = 9) has electronic configuration 1s2 2s2 \[\ce{2p^2_{{x}}}\] \[\ce{2p^2_{{y}}}\] \[\ce{2p^1_{{z}}}\]. During the formation of HF molecule, half-filled 1s orbital of hydrogen atom overlaps coaxially with half-filled 2pz orbital of fluorine atom with opposite electron spin and an s–p σ bond is formed. - Diagram:
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संबंधित प्रश्न
Draw diagram for bonding in ethene with sp2 Hybridisation.
Distinguish between sigma and pi bond.
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Explain geometry of methane molecule on the basis of Hybridization.
Identify the type of overlap present in F2. Explain diagrammatically.
Complete the following Table.
| Molecule | Type of Hybridization | Type of bonds | Geometry | Bond angle |
| CH4 | - | 4C-H 4σ bonds |
Tetrahedral | - |
| NH3 | sp3 | 3N-H 3σ bonds 1 lone pair |
- | - |
| H2O | - | - | angular | 104.5° |
| BF3 | sp2 | - | - | 120° |
| C2H4 | - | - | - | 120° |
| BeF2 | - | 2 Be-F | Linear | - |
| C2H2 | sp | (3σ+2π) 1C-C σ 2C-H σ 2C-C π |
- | - |
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Match List - I with List - II.
| List - I | List - II | ||
| (a) | \[\ce{PCl5}\] | (i) | Square pyramidal |
| (b) | \[\ce{SF6}\] | (ii) | Trigonal planar |
| (c) | \[\ce{BrF5}\] | (iii) | Octahedral |
| (d) | \[\ce{BF3}\] | (iv) | Trigonal bipyramidal |
Choose the correct answer from the options given below.
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