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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Q. Increase in atomic number is associated with increase in

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Q. Electron affinity of carbon atom is

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Q. Valence electron of Li lies in shell

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Q. Element having low ionization energies are

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Q. Character of bonds which are formed between similar atoms are

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Q. First ionization energy of sodium is

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Q. The atomic radius of helium in pm is

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Q. transfer of electrons from higher energy state to a lower energy state is responsibility of

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Q. Elements having high ionization energies are

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Q. Increase in atomic radii in a group is due to increase in number of

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