Elements in the first group have one outer shell electron and are extremely reactive they are called

The first group can be called the Alkali metals or Lanthanoids

This is what i found on google “lithium and sulfide can react together to form litium sulfide(li2s). when lithium sulfide hydrolyses(breaks down) in air, it releases hydrogen sulfide which is characteristized by a rotten egg odor.” i hope this you for what your looking for

Nucleus for question ome