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Question

Rutherford used alpha particles in his experiment. The charge of alpha particles is _________.

A
+4
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B
-1
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C
+2
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D
-2
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Solution

The correct option is C +2
An alpha-particle is identical to the nucleus of a normal helium atom i.e., He2+.
Alpha particles consist of two protons and two neutrons. Protons are positively charged and neutrons are neutral in nature.
Hence, the charge of alpha particles is +2.

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