Multiple choice

Anisotropy is the property of being directionally dependent. Which among the following caesium salts is an anisotropic etchant of silicon?

  1. Caesium hydride

  2. Caesium hydroxide

  3. Caesium oxide

  4. Caesium cadmium bromide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Caesium hydroxide (CsOH) is a chemical compound consisting of an atom of caesium and a hydroxide group (also known as hydroxyl). It is a powerful base. Due to its high reactivity, caesium hydroxide is extremely hygroscopic. It is an anisotropic etchant of silicon, exposing octahedral planes.