Q. Covalent radius of chlorine is

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Q. In group of periodic table ionization energy is

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Q. Decreasing trend in a period is due to increase in the

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Q. atomic number of oxygen is

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Q. Chemical reactivities and chemical combinations depend upon

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Q. Force of attraction decreases due to increase of

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Q. Noble gas cannot react with

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Q. For gaining stability element, it tends to get configuration of

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Q. The Ionic radius of hydrogen in pm is

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Q. Tendency of an atom to attract a shared electron pair towards itself, is called its

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Q. In chemical combination of sodium hydride electron is gain by

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Q. Shapes of molecules are formed by

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Q. Insufficient gap between 1st and 2nd ionization energies show valence

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Q. First ionization energy of Mg is

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Q. Period ends with an element which has completed its

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Q. Greater size of an ion is depend upon greater amount of

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Q. Ionic radii have same trend as of

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Q. Due to repulsive forces potential energy of system is

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Q. First ionization energy of hydrogen is

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Q. Amount of energy evolved in breaking of hydrogen bond as compared to formation of bond is

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