Alpha particles are positively charged and contains the nucleus of ________ atom.

H e

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H

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L i

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H^{+}

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Solution

The correct option is A $H e$
Alpha particles are positively charged. They are helium nuclei containing 2 protons and 2 neutrons. They carry 2 unit positive charge and 4 unit mass. They are represented as $_{2}^{4} H e$ .

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Alpha particles are positively charged and contains the nucleus of ________ atom.

The correct option is A HeAlpha particles are positively charged. They are helium nuclei containing 2 protons and 2 neutrons. They carry 2 unit positive charge and 4 unit mass. They are represented as 42He.

The correct option is A $H e$
Alpha particles are positively charged. They are helium nuclei containing 2 protons and 2 neutrons. They carry 2 unit positive charge and 4 unit mass. They are represented as $_{2}^{4} H e$ .