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PFEFFER METHOD
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
Libermaan''s nitroso reaction mechanism
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can i have some reactions of p block elements such as in water,with oxygen,in acid etc...
Which of the following ions is not having the configuration of neon: (1) F - (2) Mg +2 (3) Na + (4
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
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what element is not grouped with others in a family? what is its usual atomic structure?
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