noble gasses
an element that is used in signs
what is neon
iron is in
group 18
metals that are considered an in between from metal and non-metals
what are metalloids
the creator of the Solid Sphere model
Who is John Dalton
the noble gas group
what is group 18
used in aerospace technology
what is the use for titanium
the only element in group 1 that is part of the Reactive Nonmetals Group
what is hydrogen
the first person to discover the atom
who is Democritus
used in balloons
what is helium
the amount of elements classified as a metal on the periodic table
what is 2/3 of the periodic table
how heavy an element is
what is Atomic Mass
the creator of the Plum Pudding model
Who was J.J. Thompson
used generally in fluorescent lights
what is krypton
periods and groups of the periodic table
what are the rows and columns of the periodic table
this subatomic atom is the same as the amount of protons are in an element
what are electrons
the first column in the periodic table
What is the Alkali metals group