Scholar Train

Atoms are made of positively charged protons and neutral neutrons in the nucleus and negatively charged electrons that orbit the nucleus in electron shells. We can use the Periodic Table of Elements (ptable.com) to figure out how many of each subatomic molecule is located! The atomic # is the number of positive protons in the nucleus. That number is also usually equal to the number of negatively charged electrons that orbit the nucleus, faster than the speed of light! The number of electrons ca