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प्रश्न
Predict the shape and bond angles in the following molecule:
NF3
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उत्तर
There are three bond pairs and one lone pair on the central atom. Hence, the shape of NF3 is trigonal pyramidal, and the F–N–F bond angle is less than 109°28′.
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संबंधित प्रश्न
Select and write the most appropriate alternatives from the given choices.
The angle between the two covalent bonds is minimum in:
Which type of hybridization is present in the ammonia molecule?
F-Be-F is a liner molecule but H-O-H is angular. Explain.
In the case of bond formation in Acetylene molecule: How many covalent bonds are formed?
In the case of bond formation in Acetylene molecule: State number of sigma and pi bonds formed.
In the case of bond formation in Acetylene molecule: Name the type of Hybridization.
Define Bond Enthalpy
Predict the shape and bond angles in the following molecule:
HCN
Predict the shape and bond angles in the following molecule:
H2S
Using data from the Table, answer the following:
| Examples | C2H6 Ethane | C2H4 Ethene | C2H2 Ethyne |
| Structure |
\[\begin{array}{cc} \backslash \phantom{......}/\phantom{.}\\ \ce{—C – C —}\\ /\phantom{......}\backslash\phantom{.}\end{array}\] |
\[\begin{array}{cc} \backslash \phantom{......}/\\ \ce{C \text{=} C}\\ /\phantom{......}\backslash\end{array}\] |
\[\ce{- C ≡ C -}\] |
| Type of bond between carbons | single | double | triple |
| Bond length (nm) | 0.154 | 0.134 | 0.120 |
| Bond Enthalpy kJ mol-1 | 348 | 612 | 837 |
- What happens to the bond length when unsaturation increases?
- Which is the most stable compound?
- Indicate the relationship between bond strength and Bond enthalpy.
- Comment on the overall relation between Bond length, Bond Enthalpy, and Bond strength and stability.
Complete the flow chart.
| Molecular Formula | Structural Formula | Shape/ Geometry | Bond angle |
| BeCl2 | 180° | ||
| O=C=O | Linear | ||
| C2H2 |
The CORRECT order of C-X bond polarity is ____________.
In gas phase H-O-O-H bond angle in H2O2 is ______.
Which of following bonds has maximum bond length?
What is the H-S-H bond angle in H2S?
Consider the reactions.
\[\ce{C_{(s)} + 2H2_{(g)} -> CH4_{(g)}}\], ΔH = −x kcal
\[\ce{C_{(g)} + 4H_{(g)} -> CH4_{(g)}}\], ΔH = −x1 kcal
\[\ce{CH4_{(g)} -> CH3_{(g)} + H_{(g)}}\], ΔH = +y kcal
The average C-H bond enthalpy is:
Which of the following pairs have identical bond order?
The bond angle is minimum in ____________.
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Why is bond order of Be2 molecule zero?
(Nb = bonding electrons, Na = antibonding electrons)
Consider the ions/molecule:
\[\ce{O^+_2, O_2, O^-_2, O^{2-}_2}\]
For increasing bond order the correct option is:
