How many tetrahedral & triangular units are present in borax?

3 tetrahedra &1 triangular

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1 tetrahedra & 3 triangular

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4 tetrahedra & no triangular

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2 tetrahedra & 2 triangular

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Solution

The correct option is D
2 tetrahedra & 2 triangular

You can clearly see that two of the boron atoms are sp3 hybridised i.e tetrahedral and two are sp2 hybridised i.e triangular in nature.

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Similar questions

Q. Explain the following :

Boron trichloride has triangular planar geometry whereas aluminium trichloride has tetrahedral dimeric structure.

$M o l e c u l e H y b r i d i s a t i o n S h a p e$

$A . P O_{4}^{- 3} 1. s p^{2} a) D i s t o r t e d o c t a h e d r a l$

$B . X e F_{6} 2. s p^{3} b) P y r a m i d$

$C . S O_{3}^{- 2} 3. s p^{3} d c) T e t r a h e d r a l$

$D . N O_{3}^{- 1} 4. s p^{3} d^{3} d) T r i a n g u l a r p l a n a r$

The correct match is

Q. Borax is actually made of two tetrahedral and two triangular units joined together and should be written as:

N a_{2} [B_{4} O_{5} (O H)_{4}] \cdot 8 H_{2}

O
Consider the following statements about borax. Which of the following is the correct statement?

Q. Match the Column-I with Column-II. Choose the correct option among the following
Column – I Column – II
(A) Borax (p)

s p^{3}

hybridization of B
(B)

B F_{3}

(q)

s p^{2}

hybridization of B
(C) Diborane (r) Triangular unit
(D) Boric acid (s) Tetrahedral unit

Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure ?

(a) A tetrehedral void is formed when a sphere of the second layer is present above triangular void in the first layer

(b) All the triangular voids are not covered by the spheres of the second layer

(c) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangulare shapes of these voids do not overlap

(d) Octahedral voids are formed when the triagular voids in th second layer exactly overlap with similar voids in the first layer

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How many tetrahedral & triangular units are present in borax?

The correct option is D 2 tetrahedra & 2 triangular You can clearly see that two of the boron atoms are sp3 hybridised i.e tetrahedral and two are sp2 hybridised i.e triangular in nature.

The correct option is D
2 tetrahedra & 2 triangular

You can clearly see that two of the boron atoms are sp3 hybridised i.e tetrahedral and two are sp2 hybridised i.e triangular in nature.