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During a flame test why is calcium''s flame not persistent, while that of strontium is?
Ans) Because it does not have many ions as compared to the Strontium. It is the ions which produce color.
Name the principal ore of tin or lead. Describe the different steps (along with equationsfor the reactions) involved in the extraction of the metal from the ore named. Name
what is the name of the precipitate and the formulae of the precipitate of NH3 (aq) and Pb(NO3)2 (aq)
What is heat atomisatin? Solution : Heat of atomisation or enthalpy of atomisation is the energy required to dissociate one mole of a given substance into atoms.
catalyst used in polymerization
A copper tube 1 inch in diameter and 2 feet long is filled with steel balls of 1 inch diameter. The space between the balls is filled with water. The specific gravity of steel is 7
group 14 reaction with oxygen
laboratory preparation
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Example for rajan rule
The order of filling of electrons in the orbitals of an atom will be : (1) 3d, 4s, 4p, 4d, 5s, (2) 4s, 3d, 4p, 5s, 4d (3) 5s, 4p, 3d, 4d, 5s
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