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Borax is actually made of two tetrahedra and two triangular units joined together and should be written as: Na2[B4O5(OH)4]·8H2O
 The correct statement/s about borax is/are:
a.  Each boron atom has four B-O bonds    
b.  Each boron atom has three B-O bonds
c. Two boron atoms have four B-O bonds while other two have three B-O bonds
d. Each boron atom has one -OH groups
Options:
A .  a
B .  b
C .  c
D .  d
Answer: Option B
:
B
Borax Is Actually Made Of Two Tetrahedra And Two Triangular ...

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