Question

When a helium atom is stripped of its two electrons, what's left are two protons and two neutrons. This "electron-less" atom is sometimes called a(n)
a. quark.
b. beta particle.
c. alpha particle.
d. helium isotope.

Answer 1

alpha particle.  You will see these in nuclear chemistry due to the fact that this is one of the type of radio active decay.  

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