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Time taken for an electron to complete one revolution in the Bohr orbit of hydrogen atom is: (1) 4 Π mr 2 / nh (2) nh/ 4Π 2 mr (3) nh/ 4Π 2 mr 2
Elements of symmetry
Sn + No3- ------- Sno2 + No2
Ratio of radii of second and first Bohr orbits of H atom: (1) 2 (2) 4 (3) 3 (4) 5 Ans: 4
what is screening effect ?
In any atom which sub-shell will have the highest energy in the following : (1) 3p (2) 3d (3) 4s (4) 3s Ans: 3d
The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's co
variation of cnductivigy with temperature
Nucleic Acids - Biomolecules In every living molecule there are available in nucleo-proteins that are made up of proteins and natural polymers of great biological significance
why nitrogen act as inert gas
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