The noble gas which is used in advertising signboard is?
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ɳεσɳ
ᴛʜᴇ ɴᴏʙʟᴇ ɢᴀs ᴜsᴇᴅ ɪɴ ᴀᴅᴠᴇʀᴛɪsɪɴɢ sɪɢɴʙᴏᴀʀᴅs ɪs ɴᴇᴏɴ.
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hope my answer will help you
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Thanks for your concern.
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