A. It is caused by an unstable nucleus changing to become more stable.
B. It involves the release of particles and energy
C. the most common kinds of rays emitted are alpha rays, gamma rays and beta rays
True or False
When a radoactive atom emits an alpha particle, it is changed to an atom with a higher mass number and a lower atomic number
2006-11-02 13:30:10 · 2 answers · asked by cetinnovations 1 in Science & Mathematics ➔ Chemistry
For the first question, , I think C is the least correct. Alpha and beta emissions are particles, not rays. B is also suspect, because not all radioactive emiissions are both particulate and energy.
For your true/false question, the answer is FALSE. An alpha emission reduces the atomic number by 2, and reduces the atomic weight by 4.
2006-11-02 16:16:32 · answer #1 · answered by Dave_Stark 7 · 0⤊ 0⤋
Regarding question1, the only possible answer is C, but only because alpha and beta are particles and not rays.
The second question is false.
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2006-11-02 21:43:56 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋