Q. 21 KJ/mol is the electron affinity value for

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Q. If ionic bond is present between metal and halogen, the halides are called

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Q. In the second period, second ionization energy of Be is more than B due to

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Q. The average of the distance between nucleus of the atom and outer most shell is

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Q. Allotropic form of carbon having giant tetrahedral structure

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Q. Vanadium shows oxidation state

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Q. When we move from top to bottom, metallic character

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Q. Metallic character decreases in the periods due to

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Q. Most non-metallic character is present in

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Q. Due to electron-electron repulsion, size of anion

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Q. The elements which have the ability to form positive ion by losing electron are considered as

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Q. Hydrides of Be, Mg, Zn and Cd are in nature

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Q. The oxidation state of "S" in H₂S is

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Q. In periods, hydration energy

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Q. The amount of energy required to remove the first electron from the atom in the gaseous state is called

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Q. Example of acidic oxide is

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Q. Element with maximum positive oxidation state of representative elements is equal to

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Q. Covalent hydrides are generally

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Q. The metal that form amphoteric oxides includes

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Q. The second electron affinity value for the formation of negative ion of oxide is

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