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Crystals and glasses Unlike a complex ion or molecule, which is a finite (often small) assembly of atoms, a solid has no fixed shape and size but can add atoms indefinit
explain the chemical change that take place in the conversion primary alcohols into secondary alcohols
define hardness and its types.
hybridization in hydroxyl group
How are p-type and n-type semiconductor obtained? A P-type semiconductor is attained by carrying out a process of doping which is adding a certain type of atoms to the semicon
chemical reactions
Explain terminal carbons and central carbons The terminal carbons are bound to three groups, and are thus trigonal planar. The central carbon is bound to two groups, and is
what is colloids
The boron trihalides are highly volatile; BF 3 (b. p., 173 K) and BCI 3 , (b. p., 260.5 K are gases, BBr 3 a volatile liquid (b. p., 319 K) and Bl 3 a low melting solid (m. p.,
Q. What are the Physical Properties of Halogens? Ans. The halogens exist as diatomic molecules held together by a single bond. Reactivity becomes less as you move down
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