Question

The elements in group 17 of the periodic table are all called halogens. All halogens have the same

Answer 1

Answer: They have same number of valence electrons.

Explanation:

Group 17 elements are known as halogens and these include fluorine (F), chlorine (Cl), Bromine (Br), iodine (I) and Astatine (At).

The valence electronic configuration of Group 17 elements is:  $ns^2np^5$ where n = period number

The number of valence electrons for these elements are 7.

Hence, all the elements in Group 17 have same number of valence electrons.

Answer 2

The group 17 elements of the periodic table have 7 valence electrons and are highly reactive, with low melting and boiling points. The halogens - including fluorine, chlorine and bromine - have a common tendency to form salts, but they are all of a toxic nature.

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