Answer:
Initially the alpha particle has only kinetic energy EK. As it approaches the gold nucleus it suffers repulsion by the 79 protons within that nucleus. Its kinetic energy changes into electric potential energy EP.
Answer:
36 bobo es 37 para que sepass yo soy inteligente bobo bobito
Answer:
The main difference between the two models was about the location of the electron in an atom.
Explanation:
<u>Rutherford described that:</u>
- The electrons were outside of the nucleus.
- They were equal in number to the "positiveness" of the nucleus.
- Also, He randomly placed the negative electrons outside the nucleus.
<u>Bohr improved the Rutherford model:</u>
- Bohr placed the electrons in distinct energy levels.
- Electrons only exist in fixed orbitals (shells) and not anywhere in between.
- Each shell has a fixed energy
- Rutherford explained the nucleus of an atom, while Bohr was more into the electrons and their energy levels.
Answer:
The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.