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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.
dickman
how is chemistry in everyday life
Q. How to calculate atomic mass of an element? Copper survive as a mixture of two isotopes. The lighter isotope (Cu-63) amid 29 protons and 34 neutrons makes up 69.17% of coppe
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Electron configurations are governed by a limitation called as the Pauli Exclusion Principle: No two electrons can have the same value for all four quantum numbers n, l, m a
what is the graph between magnification and image distance for a convex lens..and how can we find the focal length for the lens using the graph? Ans) The distance between the len
Which of the following statements is not true for ionic compoundss: (1) High melting point (2) Least lattice energy (3)Least solubility in organic compounds (4) Solubl
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Q. Use of Halides of Boron? Boron trihalides of the type BX3 exist for all the four halogens. Boron trifluoride can be prepared on a large scale by the fluorination of boric ox
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