Reading the Periodic Table

Who discovered the electron?

The atomic number for beryllium is

Cesium has _____ electrons in a neutral atom.

What is the atomic mass of barium?

What is the mass number for cobalt?

The number of protons is the same as

__________ described the nucleus as small and dense.

The number of neutrons in magnesium is

__________ states that the atom is indivisible and indestructible.

What is the symbol for iron?