The evidence that emission and absorption spectra exist was used by Bohr to crea

Question

The evidence that emission and absorption spectra exist was used by Bohr to create the concept of nuclear model of the atom quantized electric charges new lighting technologies quantized energy levels of electrons When observing an absorption line spectrum of cool gas, some electrons in the atoms of the gas are believed to move from a higher to a lower energy level move from a lower to a higher energy level combine in chemical reaction jump from one atom to another the wave model of light predicted the wave length and angle of scattered X-ray photons. The wavelength nut not the angle of scattered photons. Neither the angle nor the wavelength of scattered photon. Identify the number of subatomic particles found in the

Explanation / Answer

1. (quantized energy level of electrons) it was Neils Bohr who solved many of the problems at the time by proposing that the electron revolves around the nucleus of the atom with a definite fixed energy in a fixed path, without emitting or absorbing energy. The electron in the hydrogen atom exists only in certain definite energy levels. These energy levels are called Principal Quantum Levels, denoted by the Principal Quantum Number, n. Principal Quantum Level n = 1 is closest to the nucleus of the atom and of lowest energy. When the electron occupies the energy level of lowest energy the atom is said to be in its ground state. An atom can have only one ground state. If the electron occupies one of the higher energy levels then the atom is in an excited state. An atom has many excited states.

2. move from igher energy level to lower energy level in cool gas and n hot gas vice varsa

3. the wavelength but not the angle

The Wave Model of Light

The wave model describes how light propagates much like how ocean waves move through the water. It is more complicated than the Ray Model and takes into account wavelength and frequency. As the Wave Model incorporates wavelength it can be used to explain colors.
The Wave Model accounts for the performance and distortion of light when interacting with objects and openings that have sizes similar to the wavelength of light. Although the Wave Model is applicable for the interaction of light with some relatively large objects, it is generally used when light is associated with objects under a micron in size)

4.Protons = electrons = 92, neutron = 239-92 = 147

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