Lead used to be used in gasoline until it was banned in the 1980s because it damaged millions of peoples brains. the method of preventing knocking was made by Thomas Midgley.
Bromine is a halogen element. It is used as a gasoline additive (many brands are using his anti-engine knocking agents for their gasoline). Also, it is used for pesticide, the bromine makes a tenting method so it is perfect for fumigate housing.
To prevent knocking.
Unleaded gasoline is regular gasoline. Lead used to be added to gasoline to prevent engine knocking but the practice has been banned in most developed countries. 2nd Answer: There are some engines, a lot of them not in cars, that are made to use regular gasoline. They are designed so that the lead in regular old gasoline will build up on certain moving parts, and keep them sealed against engine pressures. Unleaded gas is not good for this type of engine, at all.
Carbon
What element is used in paint the skin to prevent infection
What element is used in paint the skin to prevent infection
The element 'Iodine' can be used to paint the skin with to prevent infections.
L E A D !
iron
fluoride
iodine
Iodine.