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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Write the formula to calculate the bond order of molecule.

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प्रश्न

Write the formula to calculate the bond order of molecule.

एका वाक्यात उत्तर
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उत्तर

Bond order of a molecule = `("N"_"b"-"N"_"a")/2`

where Nb is the number of electrons present in bonding MOs and Na is the number of electrons present in antibonding MOs.

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पाठ 5: Chemical Bonding - Exercises [पृष्ठ ८०]

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बालभारती Chemistry [English] Standard 11 Maharashtra State Board
पाठ 5 Chemical Bonding
Exercises | Q 7. (H) | पृष्ठ ८०

संबंधित प्रश्‍न

Select and write the most appropriate alternatives from the given choices.

The angle between the two covalent bonds is minimum in:


Give a reason for HF is a polar molecule


Which type of hybridization is present in the ammonia molecule?


Write the geometry and bond angle present in ammonia.


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?


Define Bond Enthalpy


Predict the shape and bond angles in the following molecule:

CF4


Predict the shape and bond angles in the following molecule:

NF3


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
  1. What happens to the bond length when unsaturation increases?
  2. Which is the most stable compound?
  3. Indicate the relationship between bond strength and Bond enthalpy.
  4. Comment on the overall relation between Bond length, Bond Enthalpy, and Bond strength and stability.

Energy required to dissociate 6 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25°C. Bond energy of H-H bond will be ____________.


The CORRECT order of C-X bond polarity is ____________.


Which of following bonds has maximum bond length?


What is the H-S-H bond angle in H2S?


The hybridization and bond angle in BeCl2 molecule are ____________ respectively.


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 is INCORRECTLY matched?


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:


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