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Question
Find the odd one out and give its explanation.
Options
Boron
Arsenic
Germanium
Gallium
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Solution
Gallium
Explanation:
Boron, arsenic, and germanium are classified as metalloids, meaning they possess properties intermediate between metals and non-metals. Gallium, however, is classified as a post-transition metal that is ductile and relatively soft, unlike the brittle metalloids in this set.
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