|
Which rule is violated in the electronic configuration ${{1s}^{0}}$ ${{2s}^{2}}$ ${{2p}^{4}}$?
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|
1
|
1869
|
September 19, 2018
|
|
Which of the following accurately describes the structure of DNA?
|
|
0
|
841
|
March 20, 2018
|
|
If uncertainties in the measurement of position
|
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1
|
2424
|
December 21, 2016
|
|
For H-atom the Bohr radius for first orbit is 0.529 A
|
|
1
|
1858
|
December 21, 2016
|
|
What kind of information about an electron
|
|
1
|
939
|
December 21, 2016
|
|
How does the Bohr theory of the hydrogen atom differ from that of Schrodinger?
|
|
0
|
2563
|
December 21, 2016
|
|
A photon of wavelength 4x ${{10}^{-7}}$ m strikes on metal surface
|
|
1
|
1512
|
December 21, 2016
|
|
The radius of first Bohr orbit of hydrogen atom is 0.529 A
|
|
1
|
31320
|
December 21, 2016
|
|
Neon gas is generally used in sign boards
|
|
1
|
997
|
December 21, 2016
|
|
For a hydrogen-like particle, derive the expression
|
|
1
|
851
|
December 21, 2016
|
|
Electromagnetic radiation of wavelength 242 nm
|
|
1
|
3668
|
December 21, 2016
|
|
The Vividh Bharati Station of All India Radio, Delhi
|
|
1
|
2918
|
December 21, 2016
|
|
Chlorophyll present in green leaves of plants absorbs light
|
|
1
|
6162
|
December 21, 2016
|
|
Prove that density of the nucleus is constant
|
|
0
|
4752
|
December 21, 2016
|
|
According to Rutherford's model of the atom
|
|
1
|
1109
|
December 21, 2016
|
|
An element with mass number 81 contains 31
|
|
1
|
5012
|
December 21, 2016
|
|
In Rutherford's experiment, generally the thin foil of heavy atoms
|
|
1
|
5158
|
December 21, 2016
|
|
The diameter of zinc atom is 2.6 A
|
|
1
|
1905
|
December 21, 2016
|
|
If the diameter of a carbon atom is 0.15 nm
|
|
1
|
1982
|
December 21, 2016
|
|
Why does the charge-to-mass ratio of positive rays
|
|
1
|
1717
|
December 21, 2016
|
|
In the gold foil experiment of Geiger and Marsden
|
|
1
|
2229
|
November 26, 2016
|
|
Number of electrons, protons and neutrors in chemical species
|
|
1
|
2550
|
November 26, 2016
|
|
Complete the following table given below
|
|
1
|
3636
|
November 26, 2016
|
|
Which popular experiment is shown in the figure?
|
|
1
|
1132
|
November 26, 2016
|
|
Show diagramatically the electron distributions in a sodium atom
|
|
1
|
4796
|
November 26, 2016
|
|
An element X has an atomic number = 12 and mass number = 26
|
|
1
|
18088
|
November 26, 2016
|
|
Define isotopes
|
|
1
|
2363
|
November 26, 2016
|
|
From Rutherford's a-particle scattering experiment,
|
|
1
|
1702
|
November 26, 2016
|
|
What is an octet? How do elements attain an octet?
|
|
1
|
3948
|
November 26, 2016
|
|
Write uses of Co-60 and U-235
|
|
1
|
3465
|
November 26, 2016
|