A) ionized helium atom
B) hydrogen atom
C) neutral atom
D) all of the above
Correct Answer: A
Solution :
\[\alpha -\]particles or a-rays are a highly ionizing form of particle radiation which have low penetration. They consists of two protons and two neutrons bound together into a region identical to a helium nucleus, hence, it can be written as \[\text{H}{{\text{e}}^{\text{2+}}}.\]You need to login to perform this action.
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