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0:00:16

shorts

0:06:15

Use molecular orbital theory to explain why the Be2 molecule does not exist.

0:09:54

What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example

0:05:13

Considering x-axis as the internuclear axis which out of the following will notform a sigma bond

0:03:37

What is the total number of sigma and pi bonds in the following molecules?(a) C2H2 (b) C2H4

0:18:05

Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms

0:17:33

What is meant by hybridisation of atomic orbitals? Describe the shapes of sp,sp2, sp3 hybrid orbital

0:07:05

Which out of NH3 and NF3 has higher dipole moment and why ?

0:04:18

Explain why BeH2 molecule has a zero dipole moment although the Be–H bonds are polar.

0:09:03

Arrange the bonds in order of increasing ionic character in molecules: LiF, K2O, N2, SO2 and ClF3.

0:07:22

Explain with the help of suitable example polar covalent bond.

0:07:42

Although both CO2 and H2O are triatomic molecules, the shape of H2O molecule is bent while

0:07:46

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions

0:15:13

Write the resonance structures for SO3, NO2 and NO3− .

0:04:26

H3PO3 can be represented by structures 1 and 2 shown below. Can these two structures be taken

0:03:24

How do you express the bond strength in terms of bond order ?

0:07:43

Although geometries of NH3 and H2O molecules are distorted tetrahedral, bond angle in water is less

0:27:14

Discuss the shape of the following molecules using VSEPR model:BeCl2, BCl3, SiCl4, AsF5, H2S, PH3

0:03:55

Write the favourable factors for the formation of ionic bond.

0:35:39

Draw the Lewis structures for the following molecules and ions :H2S, SiCl4, BeF2, CO32−, HCOOH

0:37:34

Identify compounds A,B and C in the following sequence of reactions.

0:24:36

How will you convert nitrobenzene into i. 1,3,5 - trinitrobenzene ii. o and p- nitrophenol

0:12:53

What happens when i. 2 – Nitropropane boiled with HCl

0:05:31

There are two isomers with the formula CH3NO2 . How will you distinguish between them?