Why can atoms be seen with an electron beam?

Q: In terms of wavelength, what is the smallest orbit that an electron can have about the atomic…

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Q: As an electron moves from the 3rd electron shell to the 4th electron shell, the energy of the atom..

A: As the electron moves from lower to higher shell it will Absorb energy the energy of the atom…

Q: What happens to an electron when it absorbs a tiny packet of light called a photon?

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Q: In addition to their electrical attraction, electrons and protons attract each other…

A: Why gravitational attraction is not considered when trying to understand the structure of an atom .

Q: What happens to an electron when a photon hits it?

A: As per Compton effect, when a photon strikes an electron at rest, some of its energy is lost to the…

Q: what is the difference between a photocell and a photodiode?

A: Photocell: It is Light Dependent Resistor 'LDR'. This device is based on photovoltaic effect or…

Q: How can elements with low atomic numbers have so many spectral lines?

A: The electron in the lower level orbit jumps into higher level orbit when an extra amount of energy…

Q: Does an electron in an atom move at all?

A: Explanation: An electron in a stable atomic state does not move in the sense of waving through…

Q: A typical atomic nucleus is about 5x10^-15m in radius. Use the uncertainty principle to place a…

A: Given values: Nucleus radius ∆x=5×10-15 m

Q: Which statement is Not correct resonance emission has exact amount of absorption energy IR needs…

A: resonance emission does not have has an exact amount of absorption energyIR does not need…

Q: Why do lithium, potassium, and sodium exhibit similar chemical properties?

A: Given:  Lithium, potassium, sodium

Q: In what specific way does light from distant stars and galaxies tell astronomers that atoms…

A: Every element emit a specific light which contain a specific wavelength. The different element have…

Q: Which laser beam carries more energy per photon—a red beam or a green beam?

A: Given:  a red and a green beam

Q: In Bohr's theory of the atom, what force was responsible for holding the electrons in their orbit?

A: The electric force between the charged bodies at rest is called Electrostatic force or Coulomb force…

Q: A red laser with wavelength 633 nm emits 1.92kW of power. The number of photons emitted per second…

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Q: A hydrogen atom and a carbon atom move at same speed. Which has the greater kinetic energy?

A: Let the mass of hydrogen atom be denoted by mh and the mass of the carbon atom be denoted as mc.Let…

Q: How can we explain why electrons don’t spiral into the attracting nucleus?

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Q: Why are the rays released by a cathode ray tube considered to be light?

A: Why are the rays released by a cathode ray tube considered to be light?

Q: Why does a sodium street lamp give off a different color light than a neon light?

A: Sodium street lamp gives off yellow color, while a neon light gives of a red color.

Q: What element has the lightest atoms?

A: Hydrogen has the lightest atoms. Its atomic number is 1 and its atomic mass is 1.00794 amu. It has…

Q: When was x-ray invented?

A: To determine When X ray was Invented

Q: Find the orientation of the elements upon which they act?

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Q: Do electron have the the most mass in the atom ?

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Q: Why is an electron microscope more suitable than an optical microscope for “seeing” objects of…

A: An optical microscope enlarges an object which produce the light in the wavelength of visible range.…

Q: . According to the Bohr model, what may happen when an atom gains energy?

A: According to Bohr model electron occupies in a definite energy levels called orbits.These energy…

Q: Does the cathode accelerate the electrons?

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Q: Why doesn't a neon sign finally run out of atoms to excite and produce dimmer and dimmer light?

A: The neon light does not get dimmer since the neon is not lost. There is not a leak in the tube so…

Q: What is electron emission?

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Q: How can an electron leap between atomic levels without passing through all the space in between?

A: An electron is a quantum subatomic particle that possesses dual character, that is it can act both…

Q: When the speed of the electrons striking a metal surface is increased, theresult is an increase in…

A: Given information :- It is given that the speed of electron striking the metal surface increased and…

Q: How many and what type of motion degrees of freedom does an atom have in two dimensions? (time…

A: Required :: Number of degrees of motion.

Q: Do the electrons behave like waves?

A: Electrons are subatomic particles that hold an elementary charge of magnitude -1. The charge of an…

Q: A quantized item Multiple Choice has possible values that are limited to a discrete set. applies…

A: UNIT , DIMENSION AND ERROR

Q: Does an atom have a color?

A: Atoms unlike molecules do not have colors. We can’t see color of atoms not because they are too…

Q: Why can atoms not be seen with a powerful optical microscope?

A: Atoms cant been seen with an optical microscope because the size of the atoms is smaller than the…

Q: In a neon tube, what occurs immediately after an atom is excited?

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Q: Why the emitted photons from a Hydrogen atom only have certain colours?

A: Electrons in hydrogen atom revolve in orbits which have fixed energy levels. For an electron to jump…

Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.