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What is a Halogen? How do we come to know that a perticular element is a halogen?
Asked by shrihari m | 12 Oct, 2014, 04:56: PM
answered-by-expert Expert Answer
Dear mshrihari3@gmail.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

The halogens are five non-metallic elements found in group 17 of the periodic table which includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

There are some distinct properties which are shown by halogens:

  1. Halogens possess seven outer electrons. An additional electron can be added to halogen atoms to form singly charged negative ions.
  2. As a group, the halogens are among the most electronegative elements.
  3. The halogens have distinctive, unpleasant odours, will burn exposed flesh, and are toxic.


Regards

Topperlearning Team.
Answered by Arvind Diwale | 13 Oct, 2014, 11:19: AM

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