Pewter is 85% - 99% tin. Other constituents of the alloy are copper, antimony, bismuth and lead. There is no zinc in pewter
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there are many combinations of brass/copper/zinc. High brass for example has 65% copper and 35% zinc. Nickel brass has 70% copper and 24.5% zinc with 5.5% nickel Prince's has 75% copper and 25% zinc
One of the many types of brass.
Lincoln cents post-1982 are only 2.5% copper (the balance is zinc). Lincoln cents pre-1982 are 95% copper (except 1943, which are steel coated with zinc). 1982 Lincoln cents can be either type.
name of zinc ion is chemistry is Zn +2.It has valency of 2 electrons.
Next to none. Post-1982 pennies are only plated with copper, they are mostly zinc. The amount of copper on a post-1982 penny is miniscule and costs more to remove than melt value is.