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What are the formal charges on nitrogen atom 1,2 and 3 respectively ?
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Important Questions on Chemical Bonding and Molecular Structure

EASY
Arrange the following compounds in increasing order of C-OH bond length: methanol, phenol, p -ethoxyphenol
MEDIUM
In ozone molecule, the formal charge on the central oxygen atom is
EASY
Which of the following pair contains 2 lone pair of electrons on the central atom?
MEDIUM
The compound(s) with two lone pairs of electrons on the central atom is (are)
EASY
The number of π -bonds and σ -bonds present in naphthalene are respectively
MEDIUM

Give a reason for the following:

Ionic compounds have a high melting point.

MEDIUM

Two elements A and B have electronegativities 1.2 and 3.0 respectively. The nature of bond between A and B would be

HARD
The lattice energies of NaCl, NaF, KCl and RbCl follow the order
MEDIUM
Which of the following compounds contain(s) no covalent bond(s)?

KCl, PH3, O2, B2H6, H2SO4
EASY
The numbers of lone pair and bond pairs in hydrazine are, respectively:
EASY
The intermolecular potential energy for the moleculesA ,B , C and D given below suggests that:
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MEDIUM
The compound that has the largest HMH bond angle (M = N, O, S, C), is :
MEDIUM

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

i  SO2     ii  K2O     iii  N2    iv  LiF

MEDIUM
Among the following molecules, the one with the largest bond angle at the central atom is
MEDIUM
Maximum bond angle at nitrogen is present in which of the following?