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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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An element have atomic weight 40 and it's electronic configuration is 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 . Then its atomic number and number of neutrons will be: (1) 18 and 22
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Principal quantum number of an atom represents : (1) Size of the orbital (2) Spin angular momentum (3) Orbital angular momentum (4) Space orientation of the orbital
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