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100
the central core of an atom containing protons and usually neutrons
What is nucleus
100
the number of protons in the nucleus of an atom
What is atomic number
100
a chart of the elements showing the repeating pattern of their properties
What is the periodic table
200
a small positvley charged particle in the nuculeus in the of the atom
What is proton
200
A one or two letter representation of an element
What is chemical symbol
200
the first person to organize all the elements in to the periodic table
who is Dmitri Mendleev
300
a small particle in the nuculeus of the atom with no electrical charge
What is neutron
300
elements in the same vertical column of the periodic table
What is family/group
300
the electrons move around the neuculus giving it an orbit
What is an orbit
400
a tiny negatively charged particle that moves around the nuculeus of the atom
What is electron
400
a horizontal row of elements in the periodic table
What is period
400
an atom with the same number of protons and a different number of neutrons from other atoms of the same element
What is isotope
500
the average mass of all the isotopes of an element
What is atomic mass
500
the elctrons on the farthermost ring of the nuculeus
What are valence electrons
500
when an atom needs more electrons on outer shell to have and make it full it bond and sticks to another atom
What is bonding power