select a correct sets of quantum numbers (n,l,ml,ms) for the highest electron in

Question

select a correct sets of quantum numbers (n,l,ml,ms) for the highest electron in the ground state of gallium, GA
3,2,1,1/2 3,2,0,1/2 4,1,2,1/2 4,2,-1,1/2 4,1,0,1/2 select a correct sets of quantum numbers (n,l,ml,ms) for the highest electron in the ground state of gallium, GA
3,2,1,1/2 3,2,0,1/2 4,1,2,1/2 4,2,-1,1/2 4,1,0,1/2 select a correct sets of quantum numbers (n,l,ml,ms) for the highest electron in the ground state of gallium, GA
3,2,1,1/2 3,2,0,1/2 4,1,2,1/2 4,2,-1,1/2 4,1,0,1/2 select a correct sets of quantum numbers (n,l,ml,ms) for the highest electron in the ground state of gallium, GA
3,2,1,1/2 3,2,0,1/2 4,1,2,1/2 4,2,-1,1/2 4,1,0,1/2

Explanation / Answer

The electron present in an atom can be represented by the Quantum numbers, namely, Principal (n), Azimuthal (l), magnetic angular momentum (ml) and spin quantum number (ms). Principal quantum number represents the shell in which electron presents whereas l represents sub-shell in which electron occupies. It can have values 0,1,2,3 if the electron respectively occupies s, p ,d, and f orbitals. ml takes values from -l to +l. For example, if the electron present in p-orbital can have ml values from -1 to +1. The spin angular quantum number can have two values, +1/2 for UP spin and -1/2 for down spin.

Let us now give correct sets of quantum numbers for the highest electron in the ground state of Ga

The electronic configuration of Ga is [Ar]3d104s24p1.

So the valance electron is in 4 shell, thus n=4

Since, the electron is in p-sub shell, so l=1

Accordingly, ml = 0 and ms = 1/2 (According to Pauli's principle )

Hence, the correct sets of quantum numbers are 4, 1, 0, 1/2

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