Chemistry One-Liners for various competitive examinations
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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.
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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