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Effect of Nuclear Charge

A radioactive...

Question

A radioactive source emits three types of radiations. Name the radiation which has the lowest penetrating power.

A

a l p h a

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B

b e t a

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C

g a m m a

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D

All of the above

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Solution

The correct option is A $a l p h a$
$α$ particles have atomic number of $2$ and mass number of $4$ . These are most heavy and least penetrating.

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