[bivalent metals that constitute the group 2 (formerly group IIa) of the periodic table; they are Be, Mg, Ca, Sr, Ba and Ra. ( CSP )]
UMLS (CSP) C0025555 Relation/PAR: Element
metal
Relation/CHD: Ba
Be
[TN402] CALCIUM
[TN406] MAGNESIUM
Sr
[TN402] CALCIUM
Sr