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Which rule is violated in the electronic configuration ${{1s}^{0}}$ ${{2s}^{2}}$ ${{2p}^{4}}$?
|
|
1
|
1919
|
September 19, 2018
|
|
Which of the following accurately describes the structure of DNA?
|
|
0
|
887
|
March 20, 2018
|
|
If uncertainties in the measurement of position
|
|
1
|
2497
|
December 21, 2016
|
|
For H-atom the Bohr radius for first orbit is 0.529 A
|
|
1
|
1986
|
December 21, 2016
|
|
What kind of information about an electron
|
|
1
|
1017
|
December 21, 2016
|
|
How does the Bohr theory of the hydrogen atom differ from that of Schrodinger?
|
|
0
|
2644
|
December 21, 2016
|
|
A photon of wavelength 4x ${{10}^{-7}}$ m strikes on metal surface
|
|
1
|
1634
|
December 21, 2016
|
|
The radius of first Bohr orbit of hydrogen atom is 0.529 A
|
|
1
|
31952
|
December 21, 2016
|
|
Neon gas is generally used in sign boards
|
|
1
|
1056
|
December 21, 2016
|
|
For a hydrogen-like particle, derive the expression
|
|
1
|
917
|
December 21, 2016
|
|
Electromagnetic radiation of wavelength 242 nm
|
|
1
|
3759
|
December 21, 2016
|
|
The Vividh Bharati Station of All India Radio, Delhi
|
|
1
|
2975
|
December 21, 2016
|
|
Chlorophyll present in green leaves of plants absorbs light
|
|
1
|
6291
|
December 21, 2016
|
|
Prove that density of the nucleus is constant
|
|
0
|
5042
|
December 21, 2016
|
|
According to Rutherford's model of the atom
|
|
1
|
1166
|
December 21, 2016
|
|
An element with mass number 81 contains 31
|
|
1
|
5074
|
December 21, 2016
|
|
In Rutherford's experiment, generally the thin foil of heavy atoms
|
|
1
|
5250
|
December 21, 2016
|
|
The diameter of zinc atom is 2.6 A
|
|
1
|
1974
|
December 21, 2016
|
|
If the diameter of a carbon atom is 0.15 nm
|
|
1
|
2052
|
December 21, 2016
|
|
Why does the charge-to-mass ratio of positive rays
|
|
1
|
1802
|
December 21, 2016
|
|
In the gold foil experiment of Geiger and Marsden
|
|
1
|
2299
|
November 26, 2016
|
|
Number of electrons, protons and neutrors in chemical species
|
|
1
|
2695
|
November 26, 2016
|
|
Complete the following table given below
|
|
1
|
3813
|
November 26, 2016
|
|
Which popular experiment is shown in the figure?
|
|
1
|
1199
|
November 26, 2016
|
|
Show diagramatically the electron distributions in a sodium atom
|
|
1
|
4917
|
November 26, 2016
|
|
An element X has an atomic number = 12 and mass number = 26
|
|
1
|
20298
|
November 26, 2016
|
|
Define isotopes
|
|
1
|
2417
|
November 26, 2016
|
|
From Rutherford's a-particle scattering experiment,
|
|
1
|
1785
|
November 26, 2016
|
|
What is an octet? How do elements attain an octet?
|
|
1
|
4046
|
November 26, 2016
|
|
Write uses of Co-60 and U-235
|
|
1
|
3616
|
November 26, 2016
|