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Silicon has a Atomic Mass number (weight of protons and neutrons) of 28.09. Its actually 28.0855

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โˆ™ 17y ago
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โˆ™ 4mo ago

The element with an Atomic Mass of 9.01218 is Beryllium (Be).

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โˆ™ 13y ago
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Q: What element has an atomic mass of 9.01218?
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