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Ratio of radii of second and first Bohr orbits of H atom: (1) 2 (2) 4 (3) 3 (4) 5 Ans: 4
Few methods preparation of cyacloalken
oxidation state of p-block elements?
Effect of impurities on resistivity: A small percentage of impurities can result in substantial increase in resistivity i.e. decrease in the conductivity. Mathem
why lithium and breyllium markedly differ from other members of theit respective group?
Onion and Garlic Onions (A. cepa), and garlic (A. sativam), have been used in traditional and folk medicine for over 4000 years. Disorders for which both garlic and onions ha
why is density of interstitial compounds less than that of parent metal ?
The first use of quantum theory to explain the structure of atom was made by: (1) Heisenberg (2 )Bohr (3) Planck (4) Einstein Ans: Bohr
photochemical combination of hydrogen molecule and iodine molecule
difference between ion and free radicals ?
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