Sentence examples for atomic number 89 from inspiring English sources

Actinium (Ac), radioactive chemical element, in Group 3 (IIIb) of the periodic table, atomic number 89.

The actinoid series consists of 15 elements from actinium (symbol Ac, atomic number 89) to lawrencium (symbol Lr, atomic number 103).

Giesel, on the other hand, can rightfully be credited with the first preparation of radiochemically pure actinium and with the identification of its atomic number 89.

Actinium is a radioactive chemical element with symbol Ac (not to be confused with the abbreviation for an acetyl group) and atomic number 89, which was discovered in 1899.

A bar of pure uranium, for instance, would consist entirely of atoms with atomic number 92.

Gadolinium has the symbol Gd and atomic number 64.

Darmstadtium (Ds), artificially produced transuranium element of atomic number 110.

Roentgenium (Rg), artificially produced transuranium element of atomic number 111.

Copernicium (Cn), artificially produced transuranium element of atomic number 112.

The third series extends from lanthanum (symbol La, atomic number 57) to mercury (symbol Hg, atomic number 80).

The second series includes the elements yttrium (symbol Y, atomic number 39) to cadmium (symbol Cd, atomic number 48).