EASY
Earn 100

The conductivity of the metal decreases with increases in temperature because
(a)The kinetic energy of the electron increases
(b)The movement of electrons becomes haphazard
(c)The kernels start vibrating
(d)The metal becomes hot and starts emitting radiations

50% studentsanswered this correctly
Important Questions on Chemical Bonding and Molecular Structure
MEDIUM
Which of the following is a Lewis acid?

MEDIUM
Which of the following represents the most stable Lewis dot formula for ?

EASY
Nitrogen shows maximum covalency of where as other heavier elements of the group show higher covalency because.

EASY
The numbers of lone pair and bond pairs in hydrazine are, respectively:

EASY
Total number of lone pair of electrons in ion is:

EASY
Draw the electron dot structure of the following:

EASY
What is the nature of the bond between and in

EASY
Which of the following sets has Lewis acid behaviour for all the components ?

MEDIUM
In ozone molecule, the formal charge on the central oxygen atom is

EASY
Which of the following pair contains lone pair of electrons on the central atom?

MEDIUM
The formal charge on central oxygen atom in ozone is

EASY
State whether the following statement is true or false:
“The constituent particles of a material change position during conduction of heat through it.”

EASY
Which among the following is an electron deficient compound ?

EASY
Which of the following molecule does not obey octet rule?

EASY
The ion that is isoelectronic with is

MEDIUM
is well known but is not.Because,

MEDIUM
In the given electron dot structure, the formal charge on each nitrogen atom (respectively) from left to right is _______

EASY
Valence electrons in the element are and that in element are . Most probable compound formed from and is

MEDIUM
The compound(s) with two lone pairs of electrons on the central atom is (are)

MEDIUM
What is thermal conductivity? What is its SI unit?

