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Periodic Table

Across
Manganese's abreviation
Positively charged particle
Electrons that occupy the highest energy levels in an atom
not containing or resembling or characteristic of a metal
What element is Kr
Symbol: Ag
Group 18 or AVIII
atoms with the same number of protons but different numbers of neutrons
Group 2
4 electron shells and 2 valence electrons
Alkaline earth metal with 6 electron shells
Gold foil experiment
Group 1
8 protons
Atomic number 1
Number of protons in an atom
Down
A positively charged particle in an atom
28 protons and 31 neutrons in the nucleus
Element in group 13 with a 2.0 electronegativity
Another word for group
Close to 1.0 or 4.0 in electronegativity
an element that has properties of both a metal and nonmetal
Caesium
a measure of the attraction an atom has for electrons
Showed that atoms contained electrons
groups 3 through 12
7 valence electrons
39 electrons in this elements neutral charged atom
Name of the rows
ready susceptibility to chemical change
41 protons
Halogen with electronegativity of 3.0
Symbol: Pb
When one or more electrons are lost from a neutral atom
What is indium's abreviation