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Periodic table
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silicon
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Si-28
Silicon-28 (Si-28)
Identity
Protons
14
Neutrons
14
Mass number
28
Mass
27.97693 ± 0.00055 u
Mass excess
-21.493 MeV
Spin
0+
Stability
stable
Natural occurrence
92.25 %
of silicon
All isotopes of silicon