Sentence examples for atomic number 57 from inspiring English sources

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

In the next element, lanthanum (atomic number 57), an electron is added to the 5d orbitals, but the immediately following element, cerium (atomic number 58), has two electrons in the 4f orbitals and none in the 5d orbitals.

Lanthanoid contraction, also called lanthanide contraction, in chemistry, the steady decrease in the size of the atoms and ions of the rare earth elements with increasing atomic number from lanthanum (atomic number 57) through lutetium (atomic number 71).

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 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.

This week's element is meitnerium, which has the atomic symbol, Mt, and the atomic number, 109.