bromo pogrupis — statusas T sritis chemija apibrėžtis Br, I, At. atitikmenys: angl. bromine subgroup rus. подгруппа брома … Chemijos terminų aiškinamasis žodynas
подгруппа брома — bromo pogrupis statusas T sritis chemija apibrėžtis Br, I, At. atitikmenys: angl. bromine subgroup rus. подгруппа брома … Chemijos terminų aiškinamasis žodynas
periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… … Universalium
Metalloid — 13 14 15 16 17 2 B Boron … Wikipedia
heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… … Universalium
Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta … Wikipedia