"Group 6" is the new IUPAC name for this group; the old style name was "group VIB" in the old US system (CAS) or "group VIA" in the European system (old IUPAC). Group 6 must not be confused with the group with the old-style group crossed names of either VIA (US system, CAS) or VIB (European system, old IUPAC). That group is now called group 16.
"group 6" is the new iupac name for this group; the old style name was "group vib" in the old us system (cas) or "group via" in the european system (old iupac) group 6 must not be confused with the group with the old-style group crossed names of either via (us system cas) or vib (european system old iupac) that group is now called group 16