alkaline-earth element
71Ununoctium — ununseptium ← ununoctium → ununennium Rn ↑ Uuo ↓ (Uho) …
72alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… …
73Dubnium — rutherfordium ← dubnium → seaborgium Ta ↑ Db ↓ (Upp) …
74Fermium — Not to be confused with Ferrum , the Latin name for Iron. einsteinium ← fermium → mendelevium …
75Meitnerium — hassium ← meitnerium → darmstadtium Ir ↑ Mt ↓ (Upe) …
76Nobelium — mendelevium ← nobelium → lawrencium Yb ↑ No ↓ (Upb) …
77Darmstadtium — meitnerium ← darmstadtium → roentgenium Pt ↑ Ds ↓ (Uhn) …
78Ununhexium — ununpentium ← ununhexium → ununseptium Po ↑ Uuh ↓ (Uhh) …
79Alkali metal — Group → 1 ↓ Period 2 3 Li 3 …
80oxide — oxidic /ok sid ik/, adj. /ok suyd, sid/, n. Chem. a compound in which oxygen is bonded to one or more electropositive atoms. Also, oxid /ok sid/. [1780 90; < F (now oxyde), b. oxygène and acide. See OXYGEN, ACID] * * * I Any of a large and… …
