Atomic Mass
12.0108
Atomic Number
The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
What element is period 4 and row 1
Potassium
Symbol of Mendelevium
Md
Atomic mass of Xenon
131.294
Proton
A molecule with a positive charge.
What element is period 2 and row 6
Sulfur
Symbol of Nobelium
No
Atomic mass of Gold
196.967
Molecule
A group of atoms bonded together.
What element is period 6 and row 11
Gold
Symbol of Radon
Rn
Atomic mass of Gallium
69.723
Atom
The basic unit of of a chemical element.
What element is period 7 and row 2
Radium
Symbol of Thulium
Tm
Atomic mass of Tin
118.711
Metalloids
An element whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
What element is period 5 row 14
Tin
Symbol of Holmium
Ho