With increase in principal quantum number (n), the energy difference between adjacent energy levels in hydrogen atom

decreases for lower values of n and increases for higher values of n

Which of the following statements is true for chloride ion and potassium ion, which are iso electronic?

chloride ion is bigger than potassium ion

Potassium ion is bigger than chloride ion

Size of an ion depends on the other cation or anion present

chloride ion is bigger than potassium ion

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