Answer:
5,0,0,-1/2
Explanation:
The quantum numbers are a way to characterize the electrons, and so, identify the region that it's more probable to find it (orbital). They are:
- Principal quantum number (n): represents the shell or level, and varies from 1 to 7, and are represented by the letter K, L, M, N, O, P, and Q.
- Azimuthal quantum number (l): represents the subshell or sublevel, and is represented by 0,1,2,3.., and for the letters s, p, d, f,...
- Magnetic quantum number (ml): represents the orbital. It varies from -l to +l passing by 0. Each orbital can have 2 electrons.
- Spin quantum number (ms): represents the spin of the electron. It can be +1/2 or -1/2.
The strontium has an atomic number equal to 38, by the Linus Pauling's diagram, the electronic distribution is:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²
The valence electron is at the subshell 5s, which has only one magnetic quantum number: 0. Because it has 2 electrons, the first one has spin =1/2, and the other -1/2. So the first electron of the formation of cation has quantum numbers:
n = 5; l = 0; ml = 0; ms = -1/2
