periodic table
This scientist was the first to make a periodic table
Dmitri Mendeleev
the electrons on the outer shell used in chemical bonding
valence electrons
the number in front of a chemical formula
coeffecient
the positive particle of an atom
proton
discovered protons and the nucleus
ernest rutherford
the columns on the periodic table
group/family
electrons are located here
clouds
the number low and to the right of a chemical symbol
subscript
the negative particle of an atom
electron
discovered the nuetron
james chadwick
the rows on the periodic table
periods
electrons with the least amount of energy is found here
closest to the nucleus
the number of H atoms in the chemical formula 4 HNO3
4
anything that hass mass and takes up space
matter
discovered the electron cloud and created the wave model
erin schrodinger
the number of elements on the periodic table
118
electrons with the most amount of energy are found here
farthest from the nucleus
two or more atoms held together by bonds
molecule
the particles found in the nucleus of an atom
protons and neutrons
discovered the electron in 1897
jj thompson
the three regions off the periodic table
metals, non metals, metalloids
the number of valence electrons that make an atom stable
8
the number of molecules in the chemical formula
5 ZnSO4
5
the particle that has the least amount of mass
electron
in 1913 created a model that suggested that electrons move around the nucleus in orbits
niels bohr