An Oxide of an element is a solid and dissolves in water to give a alkaline solution. The element belongs to which block
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7. If the coefficients of (3r)th and (r+2)th terms of (1 + x)2n are equal then
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19. A particle started with initial velocity u and moving with uniform acceleration a. change of velocity it will gain in the nthsecond of its journey is
38. Valence electronic configuration of VIII B group elements is