Chemistry
JAMB 2021
The fourteen elements (atomic number 90-103) after actinium are called?
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A.
Actinoids
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B.
Nucleotides
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C.
Pre-actinum elements
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D.
Atomic elements
Correct Answer: Option A
Explanation
The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.
The actinide series derives its name from the first element in the series, actinium.
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