Why do atoms have electrons? Electrons electron nucleus How many valence electrons does hydrogen (h) have? [valency of h & h+]
Spectroscopy
Electrons atom many does protons number neutrons element equal atoms charge equals so slideplayer source
List of electron configurations of elements
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2.1 elements and atoms: the building blocks of matter – anatomy and
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Isotopes: definition, explanation, properties and examples
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Electronics theory #1: electricity
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Electron configurations
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