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Question

The first and last elements of actinides are _________________.

A
actinium and lawrencium
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B
actinium and promethium
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C
actinium and seaborgium
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D
actinium and uranium
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Solution

The correct option is C actinium and lawrencium

The actinide elements are a series of elements containing 14 elements. It starts with atomic number 89 (actinium) and ends at 103 (lawrencium).


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