DefinePK

DefinePK hosts the largest index of Pakistani journals, research articles, news headlines, and videos. It also offers chapter-level book search.

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4 Videos found for "Periodic Law"

Elements and atomic number | Chemistry | Khan Academy
Elements and atomic number | Chemistry | Khan Academy
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Atomic radii trends | Atomic models and periodicity | Chemistry | Khan Academy
Atomic radii trends | Atomic models and periodicity | Chemistry | Khan Academy
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Electron configurations with the periodic table | Chemistry | Khan Academy
Electron configurations with the periodic table | Chemistry | Khan Academy
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The periodic table | Middle school chemistry | Khan Academy
The periodic table | Middle school chemistry | Khan Academy
Watch