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Atom&Periodic Table

Atom&PeriodicTable

Fill in the blankAnswer
Atoms in the same ____________ on the Periodic Table have the same number of valence electrons. group
______________ are the horizontal rows on the Periodic Table. Periods
______________ are the vertical columns on the Periodic Table. Groups
______________ number is the number of protons and neutrons in the nucleus of an atom. Mass
The protons and neutrons are located in the _________________ of an atom. nucleus
Protons have a _________________ charge. positive
Neutrons have a __________________ charge. neutral
Electrons have a ________________ charge. negative
____________________ are located on the zig zag line on the Periodic Table. Metalloids
Period number tells you the number of ______________ ____________ around the nucleus. energy levels
Nonreactive elements have _____________ valence electrons. eight
Valence electrons are found in the outer energy shell of an atom and determine _________________________. reactivity
Atomic number __________________ from left to right on the Periodic Table. increases
Elements in the same group have the same ________________ of valence electrons. number
Group number tells you the number of ______________ electrons for an atom by looking at the “ones” column. valence
Elements in the same group have the similar _____________ ________________. chemical properties
An atom’s nucleus has an overall ______________charge. positive
Proton number determines the _________________ of an atom. identity
Electrons are located in energy levels _______________ the nucleus of an atom. outside
Atoms with 1 or 7 valence electrons are highly _________________. reactive
Same number of valence _____________ means atoms have similar chemical properties. electrons
___________ number of electrons is found by looking at the group number on the Periodic Table. Valence
Metals are located on the ___________ side of the zig zag line on the Periodic Table. left
Non-metals are located on the ____________ side of the zigzag line on the Periodic Table. right
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