Excluding the elements in Group VI, leaves many possiblities. I will give you three in the Alkali metals family or Group I. Li (lithium), Na (sodium) and K (potassium). There are tons of other options, as well. You can use any periodic table, even one on-line, and find any column and you will find the many possibilties.
oxygen, sulfur, selenium
sorry i listed elements from group 6, another 3 would be Nitrogen, phosphorous, arsenic