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Most Important Selected Qs for JEE AdvancedChemistryp Block Elements (Group 13 & 14)

Coordination number of underlined or mentioned atom is greater than or equal to 4 in how many of the following? (i) Na ₂ SiF ₆ (ii) Silicon in Silica (iii) CaSiO ₃ (where the silicate unit is cyclic trisilicate) (iv) Silicon (v) [ Ag ( S ₂ O ₃ )₂ ]³⁻ (vi) SO ₃ ²⁻ (vii) H ₃ PO ₃ (viii) N ₂ O ₅ (ix) B ₂ H ₆

Correct answer

6

Step-by-step solution

(i) 6 Hence the coordination number is 4 . (iv) Silicon Each Si is bonded to four silicon atoms. (v) Coordination Number is 2

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