Question

Identify the reason for gradual change in electronegativity in halogen down the group

Answer 1

Answer:

Due to increase of atomic size..

Explanation:

Electronegativity decrease down the group due to increase in atomic size which increase shielding(screening) effect ...screening effect decrease the attraction of positive nucleus for outermost electron...

Answer 2

Answer:

The reason may be that as you go down a group, the atomic structure increases. Electronegativity will therefore decrease down the group. Solubility of Halogen. Halogens, being group VII elements, are non-polar substances requiring an electron to complete their octet thus forming covalent bonds in molecules.

The reason may be that as you go down a group, the atomic structure increases. Electronegativity will therefore decrease down the group. Solubility of Halogen. Halogens, being group VII elements, are non-polar substances requiring an electron to complete their octet thus forming covalent bonds in molecules.Subsequently, question is, why do halogens get darker down the group? From the lowest boiling and melting point to the highest, the group in order is fluorine, chlorine, bromine, iodine and astatine. As you move down the group the halogens become darker in colour. Fluorine has the highest effective nuclear charge, as the outer electrons have little shielding from inner electron

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