Page 31 - Surviving Chemistry BFF Homework Helper and Test Prep Preview
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To find Key relationships Examples
= atomic # of the element An atom with a
= # of electrons (in a neutral atom)
=
+30 and
= nucleon – neutrons
33 neutrons has
= mass # – neutrons
30 protons.
= A neutral atom of
= protons has
(in neutral atoms) = nuclear charge 35 electrons.
= mass # – neutrons
= atomic # charge of the ion A charged atom
with
=
(in ions) = nuclear charge – charge of the ion and
has 42 electrons
= m An atom with a
= mass # – atomic #
= mass # – electrons (in neutral atoms) has
= nucleons – protons 125 neutrons.
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An atom with a
= protons
= electrons (in neutral atoms)
= nuclear charge and
= has an atomic #
of 52. The atom is
tellurium.
= neutrons + protons An atom with
and
= (neutral atoms)
= nuclear charge + neutrons has a
= nucleons mass # of 122 amu.
An atom with a
= mass #
= protons + neutrons
65 neutrons
= neutrons + electrons
= nuclear charge + neutrons has a total of
113 nucleons.
An atom of argon
= protons
with a mass of 40
= electron (in neutral atom) amu has a nuclear
= mass # neutrons charge of
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