Assertion: calcium | /r/AtLocation | same group
Facets:
value: as organomagnesium compounds
type: MANNER
value: as magnesium
type: OTHER
Source sentences:
text: Although calcium is in the same group as magnesium and organomagnesium compounds are very commonly used throughout chemistry, organocalcium compounds are not similarly widespread because they are more difficult to make and more reactive, although they have recently been investigated as possible catalysts.