Why naphthalene balls disappear with time without leaving any solid?
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Naphthalene undergoes sublimation easily i.e., the change of state of naphthalene from solid to gas without the intervention of the liquid state. Thus, naphthalene balls keep on forming naphthalene vapours which disappear into the air with time without leaving any solid.
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ɴᴀᴘʜᴛʜᴀʟᴇɴᴇ ʜᴀs ᴀ ᴛᴇɴᴅᴇɴᴄʏ ᴛᴏ sᴜʙʟɪᴍᴇ,i.e,ɪᴛ ᴄʜᴀɴɢᴇs ᴅɪʀᴇᴄᴛʟʏ ᴛᴏ ᴛʜᴇ ɢᴀsᴇᴏᴜs sᴛᴀᴛᴇ. ᴛʜᴇʀᴇғᴏʀᴇ thᴇ sɪᴢᴇ ᴏғ ᴛʜᴇ ɴᴀᴘʜᴛʜᴀʟᴇɴᴇ ʙᴀʟʟs sʟᴏᴡʟʏ ᴅᴇᴄʀᴇᴀsᴇ ᴀᴍᴅ ᴜʟᴛɪᴍᴀᴛᴇʟʏ ᴛʜᴇʏ ᴅɪsᴀᴘᴘᴇᴀʀ ɴᴏ sᴏʟɪᴅ ʀᴇsɪᴅᴜᴇ ɪs ʟᴇғᴛ
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