Iodine and potassium form an ionic bond. Iodine has seven electrons in its outer shell, and potassium has one electron in its outer shell. Which conclusion is best supported by this information?
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- An ionic bond is formed between ionic species, i.e., between an anion and a cation.
- Since potassium is a metal, it tends to lose the one electron in its outermost orbital to gain noble gas configuration.
- Similarly, iodine belongs to group 17 and lacks only one electron to attain noble gas configuration.
- Hence, potassium loses the electron and forms K⁺ ion and chlorine gains this electron to form Cl⁻.
- Now, as both of these ions are oppositely charged, they form an ionic bond.
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