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Introduction to D and F block elements

The radioacti...

Question

The radioactive element present in first group of s-block is _______.

A

radium

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B

francium

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C

caesium

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D

barium

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Solution

The correct option is B francium
Among the elements of alkali metals (group 1A), Francium is the only radioactive metal.

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Introduction to D and F block elements

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