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Title: Atomic Structure (IB/A-level GCE)
Description: A document that is easy to understand, straight to the point and precise about atomic structure. Students will understand this unit utterly. With this note, scoring straight A*s and 7s has never been easier in this unit!

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Atomic Structure
Protons and Neutrons are found in the nucleus
...


Proton
Neutron
Electrons

Relative Atomic Mass
1
1
1/1840 very
negligible

Relative Charge
+
0
-

Mass Number: Sum of protons and neutron in an atom
Atomic Number: Number of protons in an atom (equal to number of
electrons in an atom)
Isotope: Atom of an element with same atomic number but
different mass number
• Isotopes have the same chemical property, but a different
physical property
...

First Ionisation Energy: Energy required to remove a mole of
electron from a mole of gaseous atom, ion or molecule
Title: Atomic Structure (IB/A-level GCE)
Description: A document that is easy to understand, straight to the point and precise about atomic structure. Students will understand this unit utterly. With this note, scoring straight A*s and 7s has never been easier in this unit!