Alpha `(alpha)` particles are
A. `He` atoms
B. `He^(2+)`ions
C. `He^(+)`ions
D. `He^(-)`ions
A. `He` atoms
B. `He^(2+)`ions
C. `He^(+)`ions
D. `He^(-)`ions
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Correct Answer – B
Alpha particles are `He^(2+)` ions, i.e. `He`atoms without their two electrons. It was confirmed by the fact that alpha particles yielded `He` gas when they combined with two electrons.