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If molecular mass and atomic mass of sulphur are 256 and 32 respectively, its atomicity is:
(1) 2
(2) 8
(3 )4
( 4)16
Ans: 8
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If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
define
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