Answer:
the Bohr model, an electron's position is known precisely because it orbits the nucleus in a fixed path. In the electron cloud model, the electron's position cannot be known precisely. Only its probable location can be known.
Explanation:
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Answer:
Its a 50% chance of it happeing
Explanation:
After 100years, sample is 250g
After 200 years, sample is 125g
After 300years, sample is 62.5 g
