The history of the atom passed through a certain sequence until our recent interpretation of atomic theory.
The correct sequence of atomic theory is;
- The atom at electrons stuck in an overall positive atom
- The atom has a small dense positive nucleus.
- Electrons exist in perfect orbits based on energy levels.
- Electrons exist in orbitals, or the most probable location
The beginning of the atomic theory saw the discovery of J.J Thompson which led to the plum - pudding model in which the atom was described as a sphere in which electrons are stuck in an overall positive atom.
This was followed by Rutherford's planetary model in which he concluded that the atom has a small dense positive nucleus. This was followed by the model of Bohr in which the electrons exist in perfect orbits based on energy levels.
Lastly, the contemporary model of the atom is called the wave - mechanical model in which electrons exist in orbitals, or the most probable location.
Learn more: brainly.com/question/14156701
1. A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
2. They can lower the energy of the transition state, so overall activation energy needed for the reaction decreases, or they can alter the mechanisms of a reaction and thus change the transition state.
3. I am not certain
I apologize if this is not what you meant.
Answer: The amount of substance of a system that contains as many elementary entities as there are atoms in 12 g of carbon-12
Explanation:
Answer:
Is about 0.53 angstroms
Explanation:
The "size" of an atom in this definition is related with the nucleus size plus the cloud of electrons that surround the nucleus, in this case, since the Hydrogen in its basic state has only one electron, practically the size of the nucleus is the size of the atom, that is 0.53 angstroms or 5.3 x 10 -11 meters.
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The answer is (1). Temperature is directly proportional to the average kinetic energy of the particles in any given sample of matter, and it is usually defined along those lines.