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Basics
An atom is the smallest part of an element
A compound is made up of two or more elements
joined together
Avogadro's constant= 6.02 x 10 to power of 23
One mole is the amount of substance containing
the Avogadro number of atoms, molecules or
group of ions…read more

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Lalalala
Atomic number of an element= amount of
protons in the nucleus of an element
Mass number is the number of protons and
neutrons in the nucleus of an atom of that
isotope.…read more

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RAM
· Weighted average mass
· Of atom of that element
· Divided by 1 twelfth
· Mass of carbon 12 atom
Relative Molecular Mass
- average mass of
- a molecule of that element
- divided by 1 twelfth
- The mass of a carbon 12 atom…read more

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Mass number of an isotope
Is the sum of protons and neutrons
In the nucleus of
The atom of that isotope
Relative isotopic mass:
-The mass of an atom of that isotope
-Divided by 1 twelfth the
-Mass of a carbon 12 atom…read more

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Isotopes are atoms of the same element containing
the same number of protons
But different number of neutrons…read more

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