MEDIUM
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Lewis has pictured that atom in terms of kernel and outermost shell that could accommodate a maximum of electrons.
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Important Questions on Chemical Bonding and Molecular Structure
EASY
Draw the Lewis dot structure of molecule. (atomic number of is )
MEDIUM
The compound(s) with two lone pairs of electrons on the central atom is (are)
EASY
Draw the electron dot structure of Sodium chloride.
HARD
The number of lone pairs present in and respectively, are
MEDIUM
Which of the following represents the most stable Lewis dot formula for ?
EASY
Draw the electron dot structure of the following:
EASY
Write the molecular formula of ethene and draw its electron dot structure.
MEDIUM
According to the Lewis formula of , the correct option is
EASY
Nitrogen shows maximum covalency of where as other heavier elements of the group show higher covalency because.
EASY
The ion that is isoelectronic with is
EASY
Amongst and , the number of species with two lone pairs of electrons at central atom is
EASY
Total number of lone pair of electrons in ion is:
MEDIUM
The sum of number of lone pairs of electrons present on the central atoms of and is
EASY
Draw the electron dot structure of the following:
MEDIUM
Number of lone pairs of electrons in the central atom of and , respectively, are
MEDIUM
Match List I with List II
|
List I (molecules/ions) |
List II (No. of lone pairs of |
||
| (A) | I. | Three | |
| (B) | II. | One | |
| (C) | III. | Two | |
| (D) | IV. | Zero | |
Choose the correct answer from the options given below:
EASY
The total number of lone pairs of electrons on oxygen atoms of ozone is
EASY
Which of the following sets has Lewis acid behaviour for all the components ?
EASY
Which of the following pair contains lone pair of electrons on the central atom?
EASY
The numbers of lone pair and bond pairs in hydrazine are, respectively:
