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Showing posts with label STRUCTURE OF ATOM:. Show all posts
Showing posts with label STRUCTURE OF ATOM:. Show all posts
Monday, April 21, 2025

In the Rutherford scattering experiment, the number of α particles scattered at an angle θ=60∘ is 12 per min. The number of α particles per minute when scattered at an angle of 90 ∘ is

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The radius of a nucleus of nucleon number 16 is 3 × 1015 m. What is the radius of a nucleus with nucleon number 128?

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Sunday, August 20, 2023

The wavelength of first line of lyman series in hydrogen tom is 1216 angstrom. the wavelength of first line of lyman series for 10 times ionsied sodium atom will be

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Saturday, July 3, 2021

What is the "de Broglie equation" or How can derived "de Broglie equation" or What is the "Wave –Particle Duality" ?

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Wave –Particle Duality, Dual Nature of Electron: Bohr’s and Sommerfield proposed that angular momentum in closed orbit is “Quantized” but ...

What is the de Broglie wave length associated with a proton moving with 25% of the velocity of light?

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  Related Questions: (1)  Show that circumference of the Bohr orbit for hydrogen atom is an integral multiple of the de Broglie wavelength a...

The de Broglie wave length of an alpha particle is 6.28 × 10^–15m. Calculate the velocity of the alpha particle (mp = 1.672 × 10^–27kg, mn = 1.675 × 10^–27 kg).

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  Related Questions: (1)  Show that circumference of the Bohr orbit for hydrogen atom is an integral multiple of the de Broglie wavelength a...

Calculate the speed and de Broglie wavelength of an electron that has been accelerated by a potential difference of 500 V.

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  Related Questions: (1)  Show that circumference of the Bohr orbit for hydrogen atom is an integral multiple of the de Broglie wavelength a...

Why does a moving cricket ball not show wave like nature?

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  According to this equation wave length decreases if m and u increases. Thus, high mass object like a cricket ball in flight would have v...

Show that circumference of the Bohr orbit for hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving about that orbit.

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  Related Questions: (1)  The ionization energy of He+ is 19.6 10^-18 J atom^-1. The energy of the first stationary state of Li+2 will be : ...

What is Quantum Theory of Radiation ?

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Q uantum Theory of Radiation: This theory was proposed by German physicist, Max Planck in 1900, to explain the phenomena of black body radia...

A bulb emits light of wave length 4500Å. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

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  Related Questions: What is the difference between 2p and 3p orbitals? Why are 2p orbitals higher in energy than 2s? Does 2s and 2p have th...

Suppose 10–17 J of light energy is needed by the interior of the human eye to see an object. How many photons of green light (wavelength =550 nm) are needed to generate this minimum amount of energy?

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    Related Questions: (1)  The ionization energy of He+ is 19.6 10^-18 J atom^-1. The energy of the first stationary state of Li+2 will be ...

Calculate the energy per mole of photon of electromagnetic radiations of wavelength 4000Å.

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  Related Questions: (1)  On the basis of Heisenbergs uncertainty principle, show that the electron cannot exist within the nucleus. (2)  ...

The quantum theory assumes that energy changes are not continuous. Why do not we notice this effect in our everyday activities?

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In everyday activities, we deal with macroscopic particles such as our bodies, or cars which gains and loss total amount of energy much larg...
Sunday, December 27, 2020

What is the difference between 2p and 3p orbitals?

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Importance difference in between 2p and 3p Orbitals is their energy. The energy of atomic orbitals depends upon principal as well as azimut...

Why are 2p orbitals higher in energy than 2s?

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The energy of atomic orbitals depends upon principal as well as azimuthal quantum number, which is  more common known as (n+l) rule . Accor...

Does 2s and 2p have the same energy?

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'NO' the energy of atomic orbitals depends upon principal as well as azimuthal quantum number, which is  more common known as (n+l) ...
Saturday, December 5, 2020

Calculate radial and angular node for 2p-orbitals.

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Radial node in 2p (i.e., l=1)                   = n-l-1                   = 2-1-1 =0 Angular node in 2p =l=1
Friday, September 25, 2020

What are difference between "Isoelectronic" and "Isosters" species?

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Isoelectronic : Ion or atom or molecule or species which have the same number of electron is called Isoelectron ic specie s. Isosters : Sub...

What are the difference between "Kernel" and "Core" ?

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 Kernel : Orbit which present after removing the outer most orbit of that atom is called kernel and electrons which is present that orbit c...