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Clark Rosenbaum ∙
Neutrons have a neutral chargeNeutrons have no charge.
hydrogen
Noble gases are: helium, neon, argon, krypton, xenon, radon, ununoctium.
The horizontal rows of elements in the periodic table are called periods.
Noble gases are all monatomic (single-atom molecules) and have the following characteristics under normal conditions :
an atom with a high electronegativity, like fluorine
Mendeleev
it needs six more electrons to have a full outer valence shell.
Hydrogen is the first element in the periodic table.
negative