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Which rule is violated in the electronic configuration ${{1s}^{0}}$ ${{2s}^{2}}$ ${{2p}^{4}}$?
|
|
1
|
1865
|
September 19, 2018
|
|
Which of the following accurately describes the structure of DNA?
|
|
0
|
837
|
March 20, 2018
|
|
If uncertainties in the measurement of position
|
|
1
|
2418
|
December 21, 2016
|
|
For H-atom the Bohr radius for first orbit is 0.529 A
|
|
1
|
1851
|
December 21, 2016
|
|
What kind of information about an electron
|
|
1
|
934
|
December 21, 2016
|
|
How does the Bohr theory of the hydrogen atom differ from that of Schrodinger?
|
|
0
|
2557
|
December 21, 2016
|
|
A photon of wavelength 4x ${{10}^{-7}}$ m strikes on metal surface
|
|
1
|
1505
|
December 21, 2016
|
|
The radius of first Bohr orbit of hydrogen atom is 0.529 A
|
|
1
|
31278
|
December 21, 2016
|
|
Neon gas is generally used in sign boards
|
|
1
|
992
|
December 21, 2016
|
|
For a hydrogen-like particle, derive the expression
|
|
1
|
850
|
December 21, 2016
|
|
Electromagnetic radiation of wavelength 242 nm
|
|
1
|
3661
|
December 21, 2016
|
|
The Vividh Bharati Station of All India Radio, Delhi
|
|
1
|
2912
|
December 21, 2016
|
|
Chlorophyll present in green leaves of plants absorbs light
|
|
1
|
6158
|
December 21, 2016
|
|
Prove that density of the nucleus is constant
|
|
0
|
4728
|
December 21, 2016
|
|
According to Rutherford's model of the atom
|
|
1
|
1105
|
December 21, 2016
|
|
An element with mass number 81 contains 31
|
|
1
|
5007
|
December 21, 2016
|
|
In Rutherford's experiment, generally the thin foil of heavy atoms
|
|
1
|
5151
|
December 21, 2016
|
|
The diameter of zinc atom is 2.6 A
|
|
1
|
1900
|
December 21, 2016
|
|
If the diameter of a carbon atom is 0.15 nm
|
|
1
|
1978
|
December 21, 2016
|
|
Why does the charge-to-mass ratio of positive rays
|
|
1
|
1713
|
December 21, 2016
|
|
In the gold foil experiment of Geiger and Marsden
|
|
1
|
2223
|
November 26, 2016
|
|
Number of electrons, protons and neutrors in chemical species
|
|
1
|
2534
|
November 26, 2016
|
|
Complete the following table given below
|
|
1
|
3625
|
November 26, 2016
|
|
Which popular experiment is shown in the figure?
|
|
1
|
1128
|
November 26, 2016
|
|
Show diagramatically the electron distributions in a sodium atom
|
|
1
|
4792
|
November 26, 2016
|
|
An element X has an atomic number = 12 and mass number = 26
|
|
1
|
18050
|
November 26, 2016
|
|
Define isotopes
|
|
1
|
2362
|
November 26, 2016
|
|
From Rutherford's a-particle scattering experiment,
|
|
1
|
1700
|
November 26, 2016
|
|
What is an octet? How do elements attain an octet?
|
|
1
|
3942
|
November 26, 2016
|
|
Write uses of Co-60 and U-235
|
|
1
|
3458
|
November 26, 2016
|