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The only three metals in the third period are sodium, magnesium, and aluminum.

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11y ago
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12y ago

51SbAntimonyMetalloid[Kr] 4d10 5s2 5p352TeTelluriumMetalloid[Kr] 4d10 5s2 5p4

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12y ago

Silicon is a metalloid in period 3.

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11y ago

Silicon..

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Q: What element is a metalloid in period 3?
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