[metals that constitute group 1(formerly group Ia) of the periodic table; they are the most strongly electropositive of the metals; note that hydrogen is not considered an alkali metal even though it falls under the group 1 heading in the periodic table. ( CSP )]
UMLS (CSP) C0025554 Relation/PAR: Element
metal
Relation/CHD: cesium
Li element
[TN403] POTASSIUM
Rb element
[TN404] SODIUM
[TN403] POTASSIUM
Rb element
[TN404] SODIUM