Put tick (sqrt) against correct choice a...

Put tick (`sqrt`) against correct choice and cross (x) against wrong choice in following question : Number of valence electrons in `Cl^-`ion are:

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PSEB-Structure of the Atoms-EXERCISE

Compare all the proposed models of atom given in the chapter 3 of the ...
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Summarize the rules for writing of distribution of electrons in variou...
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Define valency by taking examples of silicon and oxygen.
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Explain with examples : Atomic number
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Explain with examples : Mass number
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Explain with examples : Isotopes
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Explain with examples : Isobars.
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Na^+ has completely filled K and L shells. Explain.
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If bromine atom is in the form of say isotopes "35^79Br (49.7%) and "...
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The average atomic mass of a sample of an element X is 16.2 u, what ar...
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IfZ= 3, what would be the valency of the element ? Also, name the elem...
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Composition of the nuclei of two atomic species X and Y are given as u...
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(true/false) J.J. Thomson proposed that the nucleus of an atom contain...
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(true/false) A neutron is formed by an electron and a proton combining...
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(true/false) The mass of an electron is about 1/2000 times that of pro...
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(true/false) Isotope of iodine is used for making tincture iodine, whi...
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Put tick (sqrt) against correct choice and cross (x) against wrong cho...
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Put tick (sqrt) against correct choice and cross (x) against wrong cho...
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Put tick (sqrt) against correct choice and cross (x) against wrong cho...
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Which one of the following is a correct electronic configuration of so...
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