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Cards (6)
Atomic
number
is the number of
protons
in an
atom
of an
element.
Mass number is the number of
protons
and
neutrons
in the
atom
of an
element
Formula for calculating the number of neutrons . Number of neutrons =
Mass
number
-
Atomic
number
Diatomic
elements
are elements that only existing
pairs
Examples
of diatonic elements
Hydrogen
Nitrogen
Chlorine
Bromine
Oxygen
Fluorine
Iodine
Elements
are
pure
substances
that only have one kind of
atom
which cannot be broken down into
simpler
substances
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