“We called him Bk Boy and he gets upset,” says a New York City paparazzo who frequently stalks the couple.
After a decade of research on two continents, Bk is rolling out new crinkle-cut fries.
The symbol for the element berkelium.
The symbol for berkelium.
A synthetic, radioactive metallic element of the actinide series that is produced from americium, curium, or plutonium. Its most stable isotope has a half-life of about 1,400 years. Atomic number 97; melting point 986°C; valence 3, 4. See Periodic Table.