What is an ion? Give one example.
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An ion is an atom or a group of atoms in which the number of electrons is different from the number of protons. If the number of electrons is less than the number of protons the practical is a positive ion, also called a cation. Ex : sodium ion Na+ , chloride ion cl- , and oxide ion O2.
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A loan is when money is given to another party in exchange for repayment of the loan principal amount plus interest. Loan terms are agreed to by each party before any money is advanced. A loan may be secured by collateral such as a mortgage or it may be unsecured such as a credit card.
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