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When α -particles are sent through a thin metal foil, most of them go straight through the foil because (one or more are correct):
(1) Alpha particles are much heavier than electrons
(2) Alpha particles are positively charged
(3) Most part of the atom is empty space
(4)Alpha particles move with high velocity
Ans: Most part of the atom is empty space
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For">http://imageshack.us/photo/my-images/213/chemistyr.png/ For these structures? I''m not sure how to answer it.
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The phosphate of a metal has the formula MHPO 4. The formula of its chloride would be: (1) MCl (2) MCl 2 (
molecular chlorine and molecular fluorine combine to form a gaseous product.Under the same conditions of temperature and pressure it is found that one volume of Cl2 reacts with thr
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