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Following Hund's rule which element contains six unpaired electron: (1) Fe (2) Co (3) Ni (4) Cr Ans: Cr
Electronic configuration of deuterium atom is: (1) 1s 1 (2) 2s 2 (3) 2s 1 (4) 1s 2 Ans: 1s 1
Q. What is speed of light wave? Ans. Light is just one type of wave. Like all waves it can be characterized by frequency, wavelength and amplitude. Similarly, light waves ca
Characteristic flame colour: specific metals and their salts impart particular colours to Bunsen burner flame. (1) Pb (plumbum) impart pale greenish colour to the f
Styrene rubber (GR-S or Buna-S or SBR or Ameripol): Styrene butadiene rubber (SBR) is prepared by the copolymerization of butadiene (75%) and styrene (25%) in an emulsion styrene
what are the differences between positive and negative mesomeric effect
The electronic configuration of a dipositive metal M 2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be: (1) 30 (2)32
How to prepare chemistry assignment on deodrants
chemistry and mechanism of action
Q. Concepts of valence bond theory? The developments can also be cited as a typical example of the manner in which scientific theories grow and are refined in any particular fi
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