Question

define quantum number

Answer 1

quntam number is the value that is used when we are saying about energy levels of an atom or molecule

No 2 electrons of the same atom can have 4 quantam numbers

the 1st four quantam numbers are

n = 1 ( principle ) ( n = 1 ;2;3 ....)

l = 0 ( azimuthal ) ( l = 0; 1 ; 2 ; 3 .... )

ml = 0 ( magnetic Q , ml values -l to +l )

ms = + 1/2 ( spin , quantam number )( C.W )


2 nd four quantum numbers

n = 1

l = 0

ml = 0

ms = -1/2 ( A.C.W )

## harini 123 ##

Answer 2

A number which is involved in Quantum studies is known as quantum number