Struktur-Atom

Struktur Atom

Massa partikel dasar dinyatakan dalam satuan massa atom (sma), di mana 1 sma = 1,66 × 10–24 gram. Massa 1 proton sama dengan massa 1 neutron, masing – masing 1 sma. Massa elektron lebih kecil daripada massa proton atau neutron.

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