The ring size and the number of linked tetrahedral present in [Si₆O₁₈]¹²⁻ are, respectively · ABC26IN1284

Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Ring Cage Cluster · Exam: CSIR NET DEC 2015 · Marks: 2 · Difficulty: Medium

The ring size and the number of linked tetrahedral present in $\left[\mathrm{Si_6O_{18}}\right]^{12-}$ are, respectively

(a)6 and 6

(b)12 and 6

(c)12 and 12

(d)6 and 12

Answer

Answer: B ✓ checked by 4AB · confidence high

Explanation

The cyclic silicate [Si₆O₁₈]¹²⁻ (beryl-type) is a ring of six SiO₄ tetrahedra linked by six bridging O, i.e. a 12-membered Si–O ring (b).

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