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which of the following is not a characteristic of plunck''s quantum theory of radiation? A) Radiation are associated with energy B) A body can emit less or more than a quantum of e
The number of radial nodes of 3s and 2p orbitals are respectively : (1) 2, 0 (2) 0, 2 (3) 1, 2 (4) 2, 1 Ans: 2, 0
Q. Show the Relationship between matter and energy? Ans. Albert Einstein described an intricate relationship between matter and energy. It is summarized in the famous for
The correct ground state electronic configuration of chromium atom is: (1) [Ar] 3d 5 4s 1 (2)[Ar]3d 4 4s 2 (3) [AR]3d 6 4s 0 (4
Q. What do you mean by Isotopes? Isotopes and mass number although all atoms of an element have the same number of protons most elements have atoms with different numbers of ne
The shape of P -orbital is : (1) Elliptical (2) Spherical (3) Dumb-bell (4) Complex geometrical Ans: Dumb-bell
what is laws of chemical combination
explain colloidal in a huge way with example and diagram
molecular chlorine and molecular fluorine combine to form a gaseous product.Under the same conditions of temperature and pressure it is found that one volume of Cl2 reacts with thr
Why a covalent bond is directional? The covalent bond is formed as a result of pairing of two electrons in the atomic orbitals of two atoms. The bond then should lie along the
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