How many protons does an atom of cobalt have?
Which of the following is not a property of most metals?
solid at room temperature.
conduct heat and electricity well.
are often found in the gas phase.
The majority of elements on the Periodic Table are?
Neutral lithium has three protons. During a chemical reaction, one electron is removed. How many protons does lithium have now?
You must know what element lithium reacted with to determine this.
With the exception of the element hydrogen, the atomic number and the atomic mass of each element are
less than hydrogen.
not listed on the Periodic Table.