Compared to "regular" isotopes,radioactive isotopes
A) emit energy from the nucleus.
B) lose or gain neutrons.
C) lose or gain electrons.
Correct Answer:
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Q7: The positively charged particles in the nucleus
Q8: The smallest unit of matter is the
A)molecule.
B)atom.
C)compound.
D)isotope.
Q9: The atomic mass of a proton is
A)0
Q10: If the atomic number of an element
Q11: Which is characteristic of an ion?
A)Contains an
Q13: What makes an isotope radioactive?
A)It has more
Q14: Which of the following subatomic particles are
Q15: Which subatomic particle determines the identity of
Q16: The number of an element is equal
Q17: The number of protons in an atom
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