Question

1. Which of the following is not an actinoid?
(a) Curium (Z = 96 )
(b) Californium (Z = 98)
(c) Uranium (Z = 92)
(d) Terbium (Z = 65)
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Answer 1

Answer:

Terbium (Z = 65) is a lanthanoid and all others are actinoids. Lanthanoids have atomic numbers from 58 to 71. Actinoids have atomic numbers from 90 to 103.

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Answer 2

Answer:

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Explanation:

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