When a polyelectronic atom has a total spin |- s, it gives rise to (2s+ 1) spin quantum Istates, known as spin multiplicity. what is thespin multiplicity of nitrogen atom in its groundstate?(a) 4(c) 2(b) 3(d) 5

When a polyelectronic atom has a total spin |- s, it gives rise to (2s

1.	When a polyelectronic atom has a total spin \|- s, it gives rise to (2s+ 1) spin quantum Istates, known as spin multiplicity. what is thespin multiplicity of nitrogen atom in its groundstate?(a) 4(c) 2(b) 3(d) 5
Answer» Option AThemultiplicityof a state is defined as 2S + 1, where S is the total electronic spin.A high multiplicity state is therefore the same as a high-spin state. The lowest-energy state with maximum multiplicity usually has unpaired electrons all with parallel spin. Since the spin of each electron is 1/2, the total spin is one-half the number of unpaired electrons, and the multiplicity is the number of unpaired electrons + 1. For example, the nitrogen atom ground state has three unpaired electrons of parallel spin, so that the total spin is 3/2 and the multiplicity is 4.