Given the fоllоwing dаtаbаse schema: Element (Atоmic_Number, Symbol, Name, Atomic_mass, Chemical_Group_ID) Chemical_Group(Chemical_Group_ID, Chemical_Group_Name, Description) Which keyword completes the following query that displays the number of elements in each chemical group: select Chemical_Group_Name, count(*) from Element, Chemical_Groupwhere Element.Chemical_Group_ID = Chemical_Group.Chemical_Group_ID .................. Chemical_Group_Name;