  Most globular clusters (GCs) are now known to host multiple stellar
populations with different light element abundances. Here we use narrow-band
photometry and low-resolution spectroscopy for NGC 362 and NGC 6723 to
investigate their chemical properties and radial distributions of
subpopulations. We confirm that NGC 362 and NGC 6723 are among the GCs with
multiple populations showing bimodal CN distribution and CN-CH anti-correlation
without a significant spread in calcium abundance. These two GCs show more
centrally concentrated CN-weak earlier generation stars compared to the later
generation CN-strong stars. These trends are reversed with respect to those
found in previous studies for many other GCs. Our findings, therefore, seem
contradictory to the current scenario for the formation of multiple stellar
populations, but mass segregation acting on the two subpopulations might be a
possible solution to explain this reversed radial trend.
