Q. Valence electrons of Mg lies in

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Q. Variation of covalent radii in groups and periods is almost same as of

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Q. Ionization energies is influenced by atomic radius of

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Q. Amount of energy released during formation of KCl crystal lattice is

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Q. Elements of VII-A are good

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Q. force of attraction which held together oppositely charged K and Cl ions, is

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Q. When two Hydrogen atoms approach each other, forces of attraction and repulsion operate

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Q. Trend which is shown by ionization energy of group IIIA and VIA is

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Q. For stability of an isolated atom, ionization energy is

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Q. Potassium chloride has tendency to loose outermost electron and to form the

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Q. Atomic number of potassium is

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Q. Gap in 1st, 2nd,3rd and higher ionization energies help us to guess element's

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Q. Electron affinity of alkali metals is

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Q. atomic number of Argon is

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Q. Ionic bond is formed by complete transfer of electron form atom with low ionization energy to another atom and with high electron affinity ,it is theory of

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Q. Stable noble gas which lies near to F is

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Q. According to modern theory of chemical bounding, level of energy in bonds formed from atoms

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Q. Average distance between nucleus of atom and its outermost electronic shell is called

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Q. Ionic radius of lithium in pm is

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Q. Ionic radius for elements of group number VA to VIIA is formed by

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