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Atomic Number and Mass Number

An alpha part...

Question

An alpha particle is:

A

Identical to a helium nucleus

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B

Ionized hydrogen atom

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C

Helium atom

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D

Hydrogen atom

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Solution

The correct option is A Identical to a helium nucleus
An alpha particle consist of two protons and two neutrons bound together into a particle identical to helium nucleus ( $H e^{2 +}$ ).

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Atomic Number and Mass Number

Standard XII Chemistry

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