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Q. Show Occurrence Extraction of group 16? Oxygen is the most abundant of all elements on earth. Dry air contains 20.946% oxygen by volume in the free form. Oxygen forms about
Neutrons are found in atoms of all elements except in: (1) Chlorine (2) Oxygen (3) Argon (4)Hydrogen Ans: Hydrogen
The energy of an electron revolving in n th Bohr's orbit of an atom is given by the expression; (1) E n = 2Π 2 me 2 z 2 /n 2 h 2 (2) E n = 2Π 2 m
on what basis basic radicals are separated into six groups ?
Explain CMR spectrum 2,2-Dimethyl-1-propanamine (neopentylamine, (CH 3 ) 3 CCH 2 NH 2 ) has a maximum of three resonances in its CMR spectrum. 2-Methyl-2-butanamine, CH 3 CH 2
What volumne of 10.83 M HNO3 is required to prepare 683 mL of a 1.9 M HNO3 solution? Answer in units of mL
It is stated that Bohrs theory is applicable to hydrogen like ions.why? Ans) It is not stated in bohr''s theory but it is a drawback of his theory. The reason for this is
physical and chemical properties of matter
Which of the following reduces the activation energy of a chemical reaction?
what are the equacyions of Dunstan''s test ???
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