Kee Hsien's post- Sodium Bromide

Sodium bromide- made of Sodium(Na) and bromine(Br)

Sodium bromide (NaBr).
Composed of Sodium (Na) which is from the 3rd element of Group 1. It is the largest atom of its period, however still relatively small.

1st Ionization Energy: 495.8 kJ·mol−1
Electronegativity: 0.93 (Pauling scale)

and Bromine (Br) with is the 3rd element of Group 17. It is a small atom, given its position on the right side of the periodic table.

1st Ionization Energy:  1139.9  kJ·mol−1
Electronegativity: 2.96 (Pauling scale)

Sodium bromide (NaBr) is a single salt clear brine fluid that has the following features and benefits:

• It is non-damaging to the formation,
• It is thermally and chemically stable,
• It can be blended with other solutions of bromides and chlorides, and
• It is especially useful when used in formations that are known to have calcium sensitivity.

A 44.7 percent aqueous solution of sodium bromide has a density of 12.4 pounds per gallon and a crystallization temperature (LCTD) of 41°F (5°C).
A pure sodium bromide (NaBr) brine fluid is often selected when the chloride ion is not desirable and when sodium is preferred over calcium. It is often used in situations where formation waters contain high levels of sulfate or carbonate that may precipitate with the calcium ion.