Top topic this week
Questions asked by users might not always be phrased in the clearest way.
The term symbol for an atom with the configuration s1 is 2S1/2. Here's why:
s1: This indicates one electron in the s orbital.
2S: The '2' comes from the principal quantum number (n=2) of the s orbital. The 'S' represents the total orbital angular momentum (L=0) for an s orbital.
1/2: The spin multiplicity is 2S+1, which is 2(0)+1=1, indicating a doublet state. The spin angular momentum (S) for a single electron is 1/2.