By there pH . a pH below 7 is acidic . Above 7 is basic. If it’s right at 7 it’s neutral.
Explanation:
Lead can cause effects on the blood, as well as the nervous, immune, renal and cardiovascular systems. ... Exposure to high amounts of lead can cause gastrointestinal symptoms, severely damage the brain and kidneys, and may cause reproductive effects. Large doses of some lead compounds have caused cancer in lab animals.
Late answer:
Chromosphere.
The emperical formula for benzene (C6H6) is “CH”.