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why is the f-block grouped in the way it is
Fine grain sizes are obtained by slow cooling
387 J/Kg. C or 0.0924 Cal/g.C
Q. Halides of Boron and Aluminium? All the elements of Group 13 form binary halides. All the four trihalides of each element are known, with one exception. The compound Tl13 is
Draw the structures of white phosphorus and red phosphorus. Which one of these two types of phosphorus is more reactive and why?
Preservatives: The preservatives avoid spoilage of food because of microbial expansion. The most common preservative employed is sodium benzoate; C 6 H 5 COON a It is metabol
what is the relationship between the rate of cooling and the size of crystals?
deflection balance
Which one of the following is not isoelectronic with O 2- : (1) N- 3 (2) F - (3) Tl + (4) Na + Ans: Tl +
The frequency of strong yellow light in the spectrum of sodium is 5.09•10*14s calculated the wavelength of light
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