The statement provided doesn't correlate with the characteristics of Group 17 elements, which are commonly known as halogens.
Group 17 elements have a valence electron configuration of ns²np⁵, meaning they have 7 valence electrons. Due to the electronegativity and electron affinity of these elements, they tend to gain one electron to achieve a stable, noble gas configuration, resulting in a -1 charge.
Therefore, the correct statement is:
a) -1
Group 17 elements form a) -1 b) +1 C) +17 d)-17
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