Chemistry One-Liners for various competitive examinations

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Chemistry One-Liners for various competitive examinations

chemistry
chemistry

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Here are some important Chemistry one-liners for students competing for various exams

 

Watch some of the important Chemistry Bits below.


1- Bohr’s theory is based on Planck’s quantum theory of radiation.


2-Planck successfully explained the phenomenon of blackbody radiation using his Quantum theory of radiation.


3- Sommerfeld proposed elliptical orbit of an electron. He also proposed angular momentum of an electron.


4- Light is an electromagnetic wave. Quantum theory of radiation was proposed by Max Planck.


5-Protons and neutrons are present in the nucleus. Hence they are called nucleons.


6- J.J Thompson proposed watermelon model of an atom.

 

J.J Thompson
J.J Thompson

7- The main characteristic of Bohr model of an atom is that the energy of the electron remains unchanged as long as the electrons revolve around orbits.


8-  The azimuthal quantum number was proposed by Bohr. The principal quantum number gives the size and energy of the stationary orbit.


9-  A Spin quantum number was suggested by Uhlenbeck and Goudsmit. This spin quantum number gives the spin of an electron.


10- According to Aufbau principle, the electron occupies the orbital having the lowest energy.


11- Hund’s rule states that electron pairing takes place only after all the available degenerate orbitals are occupied by one electron each.


12- Pauli’s exclusion principle explains that no two electrons in an atom can have the same set of four quantum numbers.


13- Pauli’s exclusion principle is based on spectral evidence.


14-  Magnetic quantum number was proposed by Lande.


15- Magnetic quantum number determines the orientations of orbitals.


16- Rutherford proposed a planetary model of an atom.


17- J.J Thompson discovered electron.


18- Rutherford discovered proton.


19- Chadwick discovered neutron.


20- Chief Physical quantities of an atom are atomic size, ionization energy and electron affinity.


21- Ionization energy depends on nuclear charge, size of the atom, Charge on the ion and electronic configuration.


22- Subatomic particles– Electrons, protons and neutrons.


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