The crystalline form of borax has (a) tetranuclear [B₄O₅(OH)₄]²⁻ unit(b) all boron atoms in the same plane(c) equal number of sp² and sp³ hybridized boron atoms(d) one terminal hydroxide per boron atom
Answers
Answer:
(a) tetranuclear [B₄O₅(OH)₄]²⁻ is the correct answer.
Explanation:
Borax is basically sodium borate.
Na2[B4O5(OH)4]·8H2O is the formula for borax.
It's IUPAC name is Sodium tetraborate decahydrate.
Borax is mainly used for cleaning process.
It kills cockroaches, ants and other insects.
It is used in powdered form.
We will check all options to get the correct answer.
(a) tetranuclear [B₄O₅(OH)₄]²⁻ unit
It has a structure with 4 centres.
Thus the above statement is correct.
(b) all boron atoms in the same plane
The boron atom aren't in the same plane.
The above statement is incorrect.
(c) equal number of sp² and sp³
hybridized boron atoms
There are 3 sp3 and 2 sp2 hybridized atoms.
Thus the above statement is incorrect.
(d) one terminal hydroxide per boron atom
The above statement is false.
Hence,
(a) tetranuclear [B₄O₅(OH)₄]²⁻ is the correct answer.