Barium is a metal in group IIA of the periodic table with atomic number 56, an atomic weight of 137.34, and a density of 3.5 Mg/m 3. Its melting point is 714 C, and it boils at 1640 C. The electronic ...

"The germanium and barium atoms make up almost 90% of the clathrate starting material and they are completely washed out, leaving behind highly porous, sponge-like nanolayers of the remaining 10% ...

the experiment produced barium, an element whose nucleus contains around half the number of particles — about 137. How could adding one neutron to uranium end up producing an atom half the size?