Question

Borax is actually made of two tetrahedral and two triangular units joined together and should be
written as : $N{a}_2\left[B_4{O}_5\right(OH{)}_4].8H_{2}O$.
Consider the following statements about borax:
1. Each boron atom has four B-O bonds
2. EAch boron atom has three B-O bonds
3. Two boron atoms have four B-O bonds while other two have three B-O bonds
4. Each boron atom has one-OH groups
Select correct statement(s) -

• A. 1, 2
• B. 2, 3
• C. 3, 4
• D. 1, 3

Answer 1

The correct option is C 3, 4

Borax $N{a}_2\left[B_4{O}_5\right(OH{)}_4].8H_{2}O$