Q. General trend of electrical conductivity for metals in the periodic table is

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Q. Oxidation state of an element in its free state is

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Q. Binary compounds of oxygen with other elements are called

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Q. Hydration energy of ions depends upon

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Q. The best example of amphoteric oxides is

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Q. In V₂O₅, oxidation state of O is

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Q. Ionic hydrides are formed by groups

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Q. When we move from left to right in the period, basic character

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Q. The common method to determine the size of an atom is to assume that atoms are

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Q. Metals usually form basic oxides and when to dissolve in water they form

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Q. Trend of charge to size ratio and hydration energy in a period is

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Q. Example of normal oxides is

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Q. Elements of group VIIA show maximum oxidation state, +7 except

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Q. An atom gains electron to becomes

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Q. Elements of group I-A and II-A are

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Q. The value of second ionization energy for C is

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Q. When an electron is removed from an atom, it changes to ion

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Q. In NaCl, oxidation state of Na ion is

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Q. Melting and boiling points of elements explain the

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Q. Reaction of hydrogen with groups IV to VII-A give hydrides

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