CBSE Class 11   CBSE Class 11 Chemistry


Topic Replies Activity
What kind of information about an electron 2 December 21, 2016
How does the Bohr theory of the hydrogen atom differ from that of Schrodinger? 1 December 21, 2016
A photon of wavelength 4x ${{10}^{-7}}$ m strikes on metal surface 2 December 21, 2016
The radius of first Bohr orbit of hydrogen atom is 0.529 A 2 December 21, 2016
Neon gas is generally used in sign boards 2 December 21, 2016
For a hydrogen-like particle, derive the expression 2 December 21, 2016
Electromagnetic radiation of wavelength 242 nm 2 December 21, 2016
The Vividh Bharati Station of All India Radio, Delhi 2 December 21, 2016
Chlorophyll present in green leaves of plants absorbs light 2 December 21, 2016
Prove that density of the nucleus is constant 1 December 21, 2016
According to Rutherford's model of the atom 2 December 21, 2016
An element with mass number 81 contains 31 2 December 21, 2016
In Rutherford's experiment, generally the thin foil of heavy atoms 2 December 21, 2016
The diameter of zinc atom is 2.6 A 2 December 21, 2016
If the diameter of a carbon atom is 0.15 nm 2 December 21, 2016
Why does the charge-to-mass ratio of positive rays 2 December 21, 2016
Use the molecular orbital energy level diagram to show that 2 December 21, 2016
Explain why HF is less viscous than $H _{ 2 }O$ 1 December 21, 2016
Out of H and ${ H }_{ 2 }$, the latter has higher first ionisation energy 2 December 21, 2016
Apart from tetrahedral geometry 2 December 21, 2016
Is there any change in the hybridisation 2 December 21, 2016
What is the total number of sigma and pi bonds 2 December 21, 2016
Using VSEPR theory, draw the molecular structures 2 December 21, 2016
Explain the shape of ${ I }_{ 3 }^{ - }$ ion 1 December 21, 2016
Discuss the shape of the following molecules using VSEPR model 2 December 21, 2016
Explain the non-linear shape of $H _{ 2 }S$ and non-planar shape 2 December 21, 2016
Explain the important aspects of resonance 2 December 21, 2016
Although geometries of ${ NH }_{ 3 }$ and $H _{ 2 }O$ 2 December 21, 2016
Explain the shape of ${ BrF }_{ 5 }$ 1 December 21, 2016
What do you understand by bond pairs and lone pairs of electrons? 2 December 21, 2016