Question

In Borax, the number of $B - O - B$ links and $B - OH$ bonds present are respectively:
A.Five and four
B.Four and five
C.Three and four
D.Five and five

Answer 1

Hint:We know that Borax is a soft, colourless compound of Boron that would be water soluble. It consists of boron linked to oxygen and soda.

Complete step by step answer:We have to know Borax decahydrate is the common form of borax. It contains 4 Boron atoms, 17 oxygen atoms, 2 sodium atoms, and 20 hydrogen atoms. We can give the chemical formula of borax decahydrate as and the molecular formula of borax is ${H_{20}}{B_4}N{a_2}{O_{17}}$.
Borax appears as a white solid and is otherwise called as borax octahydrate.
We can also call Borax formula as sodium borate formula, sodium tetraborate formula or disodium tetraborate formula.
Naturally, we can find borax in evaporite deposits. Evaporite deposits are formed by the recurrent evaporation of seasonal lakes. We can purify naturally occurring borax recrystallization. We can also synthesize borax from compounds related to boron.
We can draw the structure as,

Image created in chemdraw by SME.
In the structure, we can see that there are five $B - O - B$ links and four $B - OH$ bonds.
Therefore, the option (A) is correct.

Note: We can use borax in laundry and other cleaning products. We can also prepare boric acid by reacting with hydrochloric acid. Boric acid colours methanol flames a transparent green. Borax comes under a white solid sodium borate, but baking soda is considered as white crystal sodium bicarbonate. Borax is soluble in ethylene glycol, discreetly soluble in methanol and diethylene glycol. It is mildly soluble in acetone. We can use Borate ions in biochemical and chemical laboratories to prepare buffers. Borax is used as a component of several detergents, enamel glazes and cosmetics.