basic concept, Chemistry

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difference between atom,element,compound,molecule,ion,charge

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The type of orbitals present in Fe  is : (1) s                       (2) s  and p     (3)  s, p and d            ()s, p, d, and f Ans: s, p and d

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Calculate ionisation potential of the electron in the first exited state of singly ionised Helium atom is given by ionisation of Hydrogen atom to be 13.6 eV. Ans: According to

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Which of the following electronic configurations is not possible: (1) 1s 2 , 2s 2                           (2)  1s 2 , 2s 2 , 2p 6     (3) 3d 10 4s 2 4p 2

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