In hyperfine interaction, there is coupling between the electron angular momentum $$\overrightarrow {\bf{J}} $$ and nuclear angular momentum $$\overrightarrow {\bf{I}} $$, forming resultant angular momentum $$\overrightarrow {\bf{F}} $$. The selection rules for the corresponding quantum number F in hyperfine transitions are
A. ΔF = ±2 only
B. ΔF = ±1 only
C. ΔF = 0, ±1
D. ΔF = ±1, ±2
Answer: Option C
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