CREATE TABLE table_52663 ("Chemical class" CLOB, "Group" CLOB, "Formula" CLOB, "Prefix" CLOB, "Suffix" CLOB, "Example" CLOB)

What prefix has Bromo as the group?
SELECT "Prefix" FROM table_52663 WHERE "Group" = 'bromo'
SELECT "Prefix" FROM "table_52663" WHERE "Group" = 'bromo'