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Which of the following bonds required the largest amount of bond energy to dissociate the atom concerned?

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Important Questions on Chemical Bonding and Molecular Structure

EASY
The intermolecular potential energy for the moleculesA ,B , C and D given below suggests that:
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EASY
Arrange the following compounds in increasing order of C-OH bond length: methanol, phenol, p -ethoxyphenol
EASY

How many ions of the following have a bond order of  2.5 ? 

N2-;NO-;C2-;N2+;C22-;CN+

MEDIUM
In which of the following pairs, the second compound is more polar than the first ? 
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Average bond enthalpy of water is 464·5kJ mol-1. If the energy required to break first O-H bond is 502kJ mol-1, how much energy per mol is required to break second O-H bond ?
HARD
The number of bonds between sulphur and oxygen atoms in S2O82- and the number of bonds between sulphur and sulphur atoms in rhombic sulphur, respectively are:
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Among the following species, the H-X-H angle ( X=B, N or P ) follows the order.
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Maximum bond angle at nitrogen is present in which of the following?
MEDIUM
Among the following molecules, the one with the largest bond angle at the central atom is
EASY
Bond lengths (in pm) of C-H, C-C, C=C and CC bonds, respectively are:
MEDIUM

Find out the correct order of ionic character in the following molecules

i  SO2     ii  K2O     iii  N2    iv  LiF

MEDIUM

The bond lengths (in pm) of C-C, CC and C=C are:

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The compound that has the largest HMH bond angle (M = N, O, S, C), is :
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In which of the following the C-H bond distance is the longest?
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The correct order of bond dissociation enthalpy of halogens is:
MEDIUM
Pick the INCORRECT statement among those given below
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If enthalpy of atomization for Br2(l) is kJ/mol and bond enthalpy for Br2 is kJ/mol, the relation between them
EASY
The number of π -bonds and σ -bonds present in naphthalene are respectively