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neils bohr

state that the electron inside the atom has fixed amount of energy that keeps
electrons moving around the nucleus within a definite region

neils bohr

described that each electron inside the atom has a fixed amount of
energy that keep the electrons moving around the nucleus within a
definite region.

orbital

the region where a particular electron is located.

excited state

when the electrons move at a high state of energy.

ground state

when an electron goes back to the lower energy level.

planetary model

the description of Bohr’s atomic model.

nuclear model

the model presented by Ernest Rutherford.

spectroscope

the analysis showed that the light given off by the vapors of elements can
be observed more accurately with an instrument.

electron configuration

the way electrons are arranged around the nuclei of the atom.

mnemonic device

a tool used in remembering the sequencing of energy levels and
sublevels.

energy atom electron higher excited stage unstable atom excess energy excited electron original lower level light transition wavelength or color

if - from a flame is supplied to - the - that is most exposed in a given atom jumps to a - unoccupied energy level, and this is called - wherein the atom is - .the tendency of the - is to immediately release the - the - returns to its - , releasing the excess energy as - . The energy of light emitted involved here is equal to the difference
in energies of the two levels involved in the - . This energy determines the - .