The edge length of a face centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm , the radius of the anion is: - Chemistry MCQ AIEEE 2026 | ExamTest.live

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The edge length of a face centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm, the radius of the anion is:

Solution & Step-by-step Explanation

In an FCC (NaCl-type) lattice, the cations and anions touch along the edge of the unit cell. 2 (r_{+} + r_{-}) = a Where a = 508 pm and r_{+} = 110 pm . 2 (110 + r_{-}) = 508 110 + r_{-} = 254 r_{-} = 254 - 110 = 144 pm

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The edge length of a face centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm, the radius of the anion is:

288 pm

398 pm

618 pm

144 pm

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