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How do you account for the following: (a) All scandium salts are white. (At. No. of Sc = 21) (b) The first ionization energies of the 5d transition elements are higher than
classification
chemical properties with reactions of alkali metals
why HF can''t be kept in glass bottle
Positronium consists of an electron and a positron (a particle which has the same mass as an electron, but opposite charge) orbiting round their common centre of mass. Calculate th
determine the no of atom in 4.5g of k
Al is used as reducing agent for the extraction of metals such as Chromium,Monganes.Explain why? Solution) Al3+ + 3 e- Al Good reducing agents like aluminum have relatively
who formulated the laws of chemical combination?
Which of the following statements is not correct for an electron that has the quantum numbers n=4 and m =2: (1) The electron may have the quantum number s= +1/2 (2) The e
state the adverse effect of common air pollution on buildings and health
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