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How to Find Out Ground State Term, , >, , >, >, >, , Vv, , VVVVVVV, , First write the electronic configuration, , Now consider only the valence electron, , Arrange the electron according to Hund’s and Pauli rule, , Now calculate the total m, value of electrons> this will provide the information about, total orbital angular momentum, L value, , Now calculate the total spin quantum number > this will provide the information about S, value, , The format to write the term symbol is, Where (2S+1) is spin multiplicity, , Lis total angular momentum, , OStDT, , J is angular momentum, , The symbol for L is S, P, D, F, G, H, I, K for value 0, 1, 2, 3, 4, 5, 6, 7, respectively, The value of J ranged from (L+S) to (L-S) including 0, , For ground state term, , J =(L-S) if subshell is less than half filled, , J= (L+S) if subshell is more than half filled, , J=S if subshell is half filled or fulfilled, , Example: Ground state term of C, , Electronic configuration — 1s”, 2s”, 2p”, Thus valence subshell is 2p?, , m,—, , , , , , 14, , , , , , , , , , +1 0 -l, , S=1/2 + 1/2 = 1; thus 2S+1)=3, L=1+0-1; thus symbol is P, J=(L-S)=1 -1 =0 (Since subshell is Jess than half filled), , Thus ground state term symbol for C is 3p,