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How many total electrons are in the O2- ion?
American Call Option
A financial agreement granting the purchaser the option, yet not the compulsion, to purchase a stock, bond, commodity, or any asset at a predetermined price within a defined time frame.
Expiration Date
The date on which an option, futures contract, or insurance policy loses its validity or expires.
Obligated
Required to do something based on legal or moral duties.
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