Classification of elements and periodicity in properties
Periodic table introduction
Periodic table groups
Periodic table valence electrons
Periodic table transition metals
Valence electrons lewis
Atomic radius trend
Atomic and ionic radii
Mini video on ion size
Ionization energy trends
Period trend for ionization energy
First and second ionization energy
Electron affinity
Electronegativity trends
Electronegativity and chemical bonds
Metallic nature trends
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KHAN ACADEMY® offers great materials that can help build your skills in subjects that are important to you.
You can master basic concepts, explore subjects further or reinforce your knowledge − at your own pace.
KHAN ACADEMY® offers great materials that can help build your skills in subjects that are important to you.
You can master basic concepts, explore subjects further or reinforce your knowledge − at your own pace.
Wherever you are in your learning journey, here are links to free materials that may be useful to identify both your strengths and any knowledge gaps in key background subjects.