Rare earth elements or rare earth metals are the 17 elements such as scandium, yttrium, and 14 lanthanides elements of the periodic table uses widely in different fields of industries. Scandium and yttrium are part of d-block elements due to their outer electronic configuration. …

What is borax?

Borax, commonly known as sodium tetraborate decahydrate has the chemical formula Na2B4O7, 10H2O or Na2[B4O5(OH)4], 8H2O. It is widely used in making optical, hard glass, antiseptic, and enamels. It is obtained by boiling mineral colemanite with sodium carbonate solution.

Structure of Borax

Borax Chemical Structure
Image Source: borax chemical formula

The above picture shows that the structure of the borax anion or [B4O5(OH)4]-2contains two tetrahedral BO4 units and two planners BO3 units. Each BO4 shares two oxygens with two planners BO3 and one oxygen with second BO4 units, The fourth oxygen is connected to the boron of the BO4 unit and hydrogen. The planner boron is sp2 hybridized and tetrahedral born is sp3 hybridized in borax structure.

Originally published at https://chemistrybloging.blogspot.com.

Hemoglobin is a high spin Fe (II) complex coordinated by the four nitrogen atoms of protoporphyrin and fifth position is bound to the nitrogen atom of an imidazole group in histidine residue. When human beings or animals inhales oxygen, hemoglobin bind to oxygen in lungs to form an oxyhemoglobin complex…

Borax, commonly written as sodium tetraborate decahydrate, Na2[B4O5(OH)4], 8H2O is an important chemical compound of boron. The borax anion has two BO4 tetrahedral units and two planar BO3 units. The structure of borax is given below the picture,

What is borax
Image Source: Borax — Formula, Structure, Properties, Reaction, Uses

It gives a slightly alkaline reaction in an aqueous solution. It formed weak boric acid on hydrolysis. On heating borax first swells due to losing the hydrated water. The anhydrous molecule on further heating to form metaborates and boron trioxide.

Borax is extensively used in making optical and hard glasses. It is also used for manufacturing enamels. Because of the low solubility of calcium and magnesium borates, it is used as a water softener.

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