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Be2+ is isoelectronic with:
(1) Mg2+
(2) Na+
(3) Li+
(4) H+
Ans: Li+
Differentiate between extrinsic and intrinsic semiconductor. Obtain an expression for the carrier concentration for an intrinsic semi-conductor. Also demonstrate that Fermi level i
# what are supersaturated vapours
What is the chemical formula for hard water?
Cis-1-ethyl-3-methylcyclohexane can be isolated in optically active form.
Environmental pollution: Soil, water and air pollution
limitations of valence bond theory
The free energy change for the formation of oxide of aluminium is highly negative ( -1000 to -1100) so , it can easily reduce any metal oxide abve it easily in ellingham diamgram a
about potassium manganate
what are the chemical properties of lactic acid?
Ring substitution in aromatic ethers Alkoxy group is ortho and para directing and it directs the incoming groups to ortho and para position. It becomes the aromatic ring leads
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