The best explanation would be that Gases were released during the Chemical reaction, causing a loss of Mass.
Answer:
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Explanation:
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The correct answer is option C
HALOGENS have 7 electrons in their final shell regardless if the total number of atoms. These 7 electrons would be shared between the 's' and 'p' orbital in the form
ns² np⁵ (the same as the question). Attached is a table that highlights the fact that halogens have the same form in terms of the valence electrons.