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The answer to each of thefollowingquestionsis a singledigitintegerrangingfrom 0 to 9. It thecorrectanswers tothe questionsnumbers A, B, Cand S (say ) are 4, 0,9and 2 respectivelythent thecorrectdarkeningof bubbles shouldbe us shownon the side : On thePaulingscale theelectronegativityof fluorine is. |
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