Question

can anyone explain me quantum numbers ?

Answer 1

@akash123

Answer 2

n = the shell
l (total nodes) = subshell which is 0...n-1 in which so s = 0 p = 2 d= 3...
radial nodes are n-l-1

Answer 3

i want all the 4 quantum numbers explained with one of their main characteristic please !

Answer 4

what do u mean?
im studying this right now too...
ill give an example?
lets say u have k which is potassium...1s2 2s2 2p6 3s2 3p6 4s1
the prinicple quantum number would be 4 because its form the 4th shell.
the subshell would be n-1
radial nodes is n-L-1

Answer 5

http://www.youtube.com/watch?v=VAnZtvYG51c check this out it definitely
helps

Answer 6

i know this one , what am asking is for the simple defenition of all 4 quantum nos , the principal , azimuthal , spin and magnetic quantum no's and their characteristic , i have a theory test that's y :|

Answer 7

@sgurjant ty :)

Answer 8

so for telling the orientation of a particular orbit...we need a 3rd quantum no...that is magnetic quantum no
eg px, py, pz
l=1 for p
so m = -l to +l
m=-1,0,+1
this corresponds to px, py and pz

Answer 9

fine?

Answer 10

yes right !

Answer 11

similarly l=2 for d sub-shell, so m=-2 to +2
m=-2,-1,0,+1,+2
so d orbital has 5 orientation

Answer 12

now the last one---spin quantum no
u know that each of px, py and pz contain 2 electrons

Answer 13

okay dxy dyz dzx dz^2 and dx^2-y^2 right ?

Answer 14

yes

Answer 15

so for distinguishing between the two electrons in an orbital (px, py or pz) , we need a fourth quantum number.

Answer 16

okay

Answer 17

u can understand it by assume that electron is spinning clockwise or anticlockwise.
so s= either+1/2 or -1/2

Answer 18

okay , how do i use it , like how do they ask question regarding spin quantum no ?

Answer 19

u will be asked...write all the quantum nos of an electron in any atom..

Answer 20

can yu give a qn and its answer ?