Sentence examples for atomic number 61 from inspiring English sources

(Earlier investigators thought that they had found the element with atomic number 61 in naturally occurring rare earths and had prematurely called it illinium and florentium).

Promethium, originally prometheum, is a chemical element with symbol Pm and atomic number 61.

In 1902, Bohuslav Brauner suggested there was an element with properties intermediate between those of the known elements neodymium (60) and samarium (62); this was confirmed in 1914 by Henry Moseley who, having measured the atomic numbers of all the elements then known, found there was no element with atomic number 61.

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).

This week's element is hassium, which has the atomic symbol, Hs, and the atomic number, 108.