Multiple Choice
When an unstable nucleus decays by emitting an alpha particle,the atomic mass number A of the nucleus
A) increases by 4.
B) increases by 2.
C) decreases by 2.
D) decreases by 4.
E) remains unchanged.
Correct Answer:

Verified
Correct Answer:
Verified
Q47: Carbon-14 decays by β<sup>-</sup> emission.What nucleus is
Q48: A radioactive isotope of atomic number Z
Q49: The atom <sup>40</sup>K decays radioactively to the
Q50: A stable nucleus contains many protons very
Q51: What are the possible charges of a
Q53: Rubidium <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6214/.jpg" alt="Rubidium Rb
Q54: In β<sup>-</sup> decay,the number of neutrons in
Q55: Fermium-253 has a half-life of 3.00 days.If
Q56: The neutral <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6214/.jpg" alt="The neutral
Q57: The symbol for a certain isotope of