avart sarni, Chemistry

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The covalency of nitrogen, The covalency of nitrogen in  HNO 3 is: (1...

The covalency of nitrogen in  HNO 3 is: (1) 0   (2) 3    (3) 4                               (4) 5 Ans: 5

Radioactivity, what is the principal of radiometric titration

what is the principal of radiometric titration

The energy of the electron in the first orbit of hydrogen, The energy of th...

The energy of the electron in the first orbit of  He +   is  -871.6x 10 -20 J . The energy of the electron in the first orbit of hydrogen would be : (1) -871.6 x10 -20 J

Determine total possible values of magnetic quantum number, If value of azi...

If value of azimuthal quantum number l  is 2, then total possible values of magnetic quantum number will be: (1) 7        (2) 5         (3) 3        (4) 2 Ans: 3

Which of the following electronic configurations, Which of the following el...

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

Hydrogen-atom, If hydrogen atom is in an energy level represented by n=4,ho...

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)

What is the electronic configuration, What is the electronic configuration ...

What is the electronic configuration of Cu 2+ (Z= 29) of least position: (1) [Ar]4s 1 3d 8                   (2)  [Ar]4s 2 , 3d 10 4p 1       (3) [Ar]4s 1 3d 10

Explain aldol condensation, Write one reaction each to exemplify the follow...

Write one reaction each to exemplify the following: (a) Aldol condensation (b) Friedel-Crafts reaction

The number of electrons in cl- ion is, The number of electrons in c l -  ...

The number of electrons in c l -  ion is: (1) 19      (2) 20      (3) 18     (4) 35 Ans: 18

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