Q. In fluorine, incoming electrons are repel by the

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Q. Shielding effect is responsible for decrease in force of attraction of nucleus for electrons present in the

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Q. From left to right in a period, shielding effect remains

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Q. Electro negativity values of elements is calculated by

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Q. Probability distribution of electrons can be affected by

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Q. Electro negativity of sodium atom is

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Q. After conversion of Na+ ion radius of Na atom reduces from

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Q. Electron has

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Q. bond formed by elements of widely different electro negativities is

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Q. Cationic radius decreases when effective nuclear charge on ion

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Q. In comparison of electronegativity values increase in a period with decrease in (structure O)

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Q. Amount of energy which is evolved in bind formation is

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Q. After loss an electron potassium attains configuration of

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Q. Electropositive elements are at a higher energy state then the

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Q. Electron affinity of potassium atom is

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Q. First ionization energy oxygen of is

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Q. Ionization energies is influenced by shielding effect of

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Q. In which period decrease of atomic radii is very prominent?

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Q. Number of electrons in valence shell of first element of period is

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Q. From top to bottom in a group of periodic table atomic radii

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