Bond Order an...

Bond Order and Enthalpy

Trending Questions

Find the bond order of the peroxide ions.

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Q. Which of the following bonds has the highest bond energy?

$C - C$
$C \equiv C$
$C = C$
$C - H$

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Q. Which of the following property is incorrectly related to bond order?

Bond order $\propto$ Bond strength
Bond order $\propto$ Stability
$Bond order \propto \frac{1}{Bond length}$
$Bond order \propto \frac{1}{Bond dissociation enthalpy}$

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Correct order of bond length is-

$C O_{3}^{2 -} > C O_{2} > C O$
$C O_{2} > C O > C O_{3}^{2 -}$
$C O > C O_{2} > C O_{3}^{2 -}$
None of these

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Q. The electronegativity of

F, O, N, C l

and

H

are

4.0, 3.5, 3.0, 3.2

and

2.1

respectively. The strongest bond between the following will be:

$F - O$
$O - C l$
$N - H$
$O - H$

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Q. The table shown below gives the bond dissociation energies

(E_{d i s})

for single covalent bonds of carbon

(C)

atoms with element

^{'} A^{'},^{'} B^{'},^{'} C^{'}

and

^{'} D^{'}

. Which element has the smallest size?

\begin{matrix} Bond & E_{d i s} ({kJ mol}^{- 1}) C - A & 240 C - B & 328 C - C & 276 C - D & 485 \end{matrix}

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H_{2}, L i_{2}, B_{2}

each has bond order equal to 1, the order of their stability is :

$H_{2} = L i_{2} = B_{2}$
$H_{2} > L i_{2} > B_{2}$
$H_{2} > B_{2} > L i_{2}$
$B_{2} > L i_{2} < H_{2}$

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Q. In which of the following processes, the bond order has increased and the magnetic behaviour has changed?

$C_{2}^{+} \to C_{2}$
$N O^{+} \to N O$
$O_{2} \to O_{2}^{+}$
$N_{2} \to N_{2}^{+}$

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Calculate the total number of molecules that will possess fractional bond order among the following molecules
$O_{2}^{2 +}, N_{2}^{2 +}, O_{2}^{+}, N O, C O, C O^{+}, O_{2}^{-}, N O^{2 +}, C N^{-}, N O^{2 -}, N_{2}^{-}$

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Q. The correct order of bond lengths is:

$O_{2}^{+} > O_{2}^{2 -} > O_{2}^{-}$
$O_{2}^{-} > O_{2}^{+} > O_{2}^{2 -}$
$O_{2}^{2 -} > O_{2}^{-} > O_{2}^{+}$
$O_{2}^{+} > O_{2}^{-} > O_{2}^{2 -}$

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Q. In which of the following processes, the bond order has increased and the magnetic behaviour has changed?

$C_{2}^{+} \to C_{2}$
$N O^{+} \to N O$
$O_{2} \to O_{2}^{+}$
$N_{2} \to N_{2}^{+}$

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If C - C (I), C = C(II) and C ≡ C(III) are three bond types, then their bond order will be respectively,

1, 2, 3
3, 2, 1
3, 1, 2
2, 1, 3

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Q. The bond order of

X - O

bond in

H P O_{3}^{2 -}

and

C l O_{4}^{-}

are respectively

$1.25 a n d 1.75$
$1.33 a n d 1.25$
$1.33 a n d 1.33$
$1.33 a n d 1.75$

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