How does electro negativity vary down the group 17 and why? How does it vary from left to right in the period? Name an element having highest electro negativity.

How does electro negativity vary down the group 17 and why? How does it vary from left to right in the period? Name an element having highest electro negativity.
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Ans. Electro negativity decreases down the group due to increase in atomic size. It increases along the period from left to right due to decrease in atomic size. Fluorine (F) has highest electro negativity.
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