Thomas Midgley used this element to boost octane rating and stop engine knocking, but in the 1970s, the United States banned the use of this element as a fuel additive.
Thomas Midgley used this element to boost octane rating and stop engine knocking, but in the 1970s, the United States banned the use of this element as a fuel additive. Exposure to this element increases the risk of neurological problems, especially in (*) children; a recent case of such exposure is ongoing in Flint, Michigan. For ten points, name this toxic element found in old paint and pipes, whose chemical symbol is Pb.
Thomas Midgley used this element to boost octane rating and stop engine knocking, but in the 1970s, the United States banned the use of this element as a fuel additive.
lead (accept Pb before it is read)