They become more stable because they achieve a full outer shell of valence electrons with the magic number of 8.
Answer: Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
Explanation:
The answer is likely to be A
Answer: similar, energy
Explanation: (edmentum answer) Several of the elements in period 5 have electron configurations with only one electron in the 5s sublevel. That suggests that the next sublevel that electrons typically fill, 4d, is not much higher in energy.
Answer:
C. The splitting apart of atomic nuclei
Explanation:
Nuclear fission is the splitting apart of atomic nuclei.
