periodic groups
Group 18 of the periodic table
What are the Noble gases?
An ion with a positive charge
What is a Caton
Thought up the idea of an atom
Who is Democritus
the number of atoms in the nucleus
what is the atomic number
a positive ion
what is a cation
Discovered the atom is empty space
Who is Rutherford
periods
what are horizontal rows
negative charge
what is an anion
All atoms are identical
Who is Millican
groups
what are vertical rows
an electron loses charge
what is positive
discovered that the binding force in compounds is electrical
Who is Faraday
the location of the electrons in an atom
an electron gains charge
what is negative
Dalton discovered these ideas
All matter is made of atoms