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1.
Which of the following pairs have identical values of 
?
?
2.
Positive charge in an atom is:
3.
(at. No. of 
) has a magnetic moment of 
The correct distribution of 
electrons in the chromium of the complex:
(at. No. of ) has a magnetic moment of The correct distribution of electrons in the chromium of the complex:
4.
The mass of an electron is 
, its charge is 
and it is accelerated from rest through a potential difference, 
. The velocity of electron will be calculated by formula
, its charge is and it is accelerated from rest through a potential difference, . The velocity of electron will be calculated by formula
5.
The present atomic weight scale is:
6.
Which one of the following set of quantum numbers is not possible for electron in the ground state of an atom with atomic number 19?
7.
Oxygen consists of 
isotopes and carbon consists of isotopes of 
and 
Total number of 
molecules possible are:
isotopes and carbon consists of isotopes of and Total number of molecules possible are:
8.
In order to designate an orbital 
in an atom, the number of quantum number required are:
in an atom, the number of quantum number required are:
9.
For a given value of azimuthal quantum number 
the total number of values for the magnetic quantum number are given by:
the total number of values for the magnetic quantum number are given by:
10.
Magnetic quantum number for the last electron in sodium is: