Niels Bohr proposed that electrons are arranged in concentric circular paths or orbits around the nucleus. Electrons in a particular path have a fixed energy, thus they do not lose energy and fall into the nucleus. Experiments were base on the hydrogen atom. Results did not hold true for other atoms.
It was NEIL BOHR gave this theory
by rahul
Ben Franklin is the one who said electrons have fixed amount of energy. He said that both the electrons and protons have the constant measure of electricity.
Danish scientist Niels Bohr was the first physicist to hypothesize that electrons occupy specific energy levels, based on his work with the element hydrogen.
Bohr
Niels Bohr
"Excited", or in an "excited state".
The amount of energy that is absorbed is the same as the amount of energy that is released.
Excited state
When the electrons are at higher energy level,they are said to be excited state.
Niels Bohr
These electrons are called "excited".
higher energy
"Excited", or in an "excited state".
"higher energy"
The amount of energy that is absorbed is the same as the amount of energy that is released.
Yes, electrons can have different amounts of energy. In quantum mechanical systems where any particle (not just electrons) are bound, they can only acquire discrete amounts of energy called energy levels. Adding energy to an electron in an atom might cause it to jump to a higher energy level and is then said to be in an excited state; if it were to fall to a lower level it would give up a discrete amount of energy equal to the difference in energy between the two states.
The electrons on the outermost level are called Valence electrons. the usual maximum is 8.
That was Niels Bohr
Excited state
Niels Bohr was the one who stated that first.
When the electrons are at higher energy level,they are said to be excited state.