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Why do halogens have maximum negative el...

Why do halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table?

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Halogens have the smallest size and high effective nuclear change in their respective periods. Thus they readily accept one electron to attain noble gas configuration.
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(a) Halogens have maximum negative gain enthalpy in the respective periods of the periodic table. Why? (b) Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine . Why? Fluorine exhibits only-1 oxidation state, wherease other hlaogens exhibit +1,+3,+5, and +7 oxidation states also. explain.

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Name a halogen which has more negative electron gain enthalpy value?

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Why do halogens have high electron gain enthalpies (i.e. -Delta_(eg)H^(o.)) ?

The maximum number of valency electrons possible for atom in the second period of the periodic table is :

If each orbital can take maximum of three electrons, the number of elements in the third period of the periodic table will be:

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