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Tardigrade
Question
Physics
α - particles are:
Q.
α
−
particles are:
1365
218
AFMC
AFMC 2003
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A
ionized helium atom
B
hydrogen atom
C
neutral atom
D
all of the above
Solution:
α
−
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
H
e
2
+