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The cation is and the anion is than th...

The cation is ________ and the anion is ________ than the parent atom.

A

smaller, bigger

B

smaller, smaller

C

bigger, bigger

D

equal, bigger

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the size comparison between cations, anions, and their parent atoms, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Definitions**: - **Cation**: A positively charged ion formed when an atom loses one or more electrons. - **Anion**: A negatively charged ion formed when an atom gains one or more electrons. - **Parent Atom**: The neutral atom from which the cation or anion is derived. 2. **Cation Size Comparison**: - When an atom loses electrons to form a cation, it loses the outermost electron shell. This results in a decrease in electron-electron repulsion and an increase in the effective nuclear charge experienced by the remaining electrons. - As a result, the cation is **smaller** than the parent atom. 3. **Anion Size Comparison**: - When an atom gains electrons to form an anion, it adds extra electrons to the outer shell. This leads to increased electron-electron repulsion among the electrons in the outer shell. - Consequently, the anion is **larger** than the parent atom. 4. **Conclusion**: - Therefore, we can conclude that: - The cation is **smaller** than the parent atom. - The anion is **larger** than the parent atom. 5. **Final Answer**: - The cation is **smaller** and the anion is **larger** than the parent atom.
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Knowledge Check

  • Consider the following statements : I. The radius of an atom anion is larger than that of the parent atom . II. The ionization energy generally increases with increasing atomic number in a period. III. The electronegativity of an element is the tendency of an isolated atom to attract an electron. Which of the above statement is/are correct?

    A
    I alone
    B
    II alone
    C
    I and II
    D
    II and III

  • Assertion: Radius of the ion is always smaller than the parent atom. Reason: Ion is formed by the loss or gain of electrons by the parent atom.

    A
    Both A and B true and R is the correct explanation A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • The cation X and the anion A are respectively

    A
    `NH_(4)^(+), CH_(3)CO_(2)^(-)`
    B
    `HCO_(2)^(-),Cu^(2+)`
    C
    `Pb^(2+), C_(2)O_(4)^(2-)`
    D
    `Cu^(2+),HCO_(2)^(-)`

    • Similar Questions

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    Explain why cations are smaller and anions larger in radii than their parent atoms?

    The cyclopentadienyl cation is _________ while cyclopentadienyl anion is ________

    Explain why callions are smaller and anions larger in radii than their parent atoms?

    The radius of cation is 100 pm and that of anion is 188 pm, then the coordination number of cation is __________.

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