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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
determination of proteins in flour sample
h2c2o4 + mno-4 - mno-4 +co2
function of citric acid in human body
formula of chromium (III) and acetate
The energy of an electron in orbit of hydrogen atom is : (1) 13.6/n 4 x eV (2) 13.6/n 3 xeV (3) 13.6/n 2 xeV (4)13.6/nx eV Ans:
An element X with the electronic configuration 1s 2 , 2s 2 , 2p 6 , 3s 2 , would be expected to form the chloride with the formula: (1) XCl 3 (2) Xcl 2 (3) XCl
What is electromagnetism
why cerium oxides is less soluble in water?
Every precipitate will be collected using a Hirsch funnel. Make definite that the plastic frit disc is firmly snapped in place in your focus. Replacement frit discs are available
The amount of energy needed to convert one mole of solid substance to vapor state is known as Sublimation energy
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