Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Ring Cage Cluster · Exam: CSIR-NET 2013 · Marks: 2 · Difficulty: Easy
Commonly used scintillator for measuring radiation is
(a)$\mathrm{Nal(AI)}$
(b)$\mathrm{Nal(TI)}$
(c)$\mathrm{CsI(TI)}$
(d)$\mathrm{Csl(AI)}$
Answer
Answer (as printed): B
Explanation
Caesium iodide ($\mathrm{CsI}$) in crystalline form is used as the scintillator for the detection of protons and alpha particles. Sodium iodide ($\mathrm{NaI}$) containing a small amount of thallium is used as a scintillator for the detection of gamma rays, and zinc sulfide ($\mathrm{ZnS}$) is widely used as a detector of alpha particles. Since the question asks about radiation (that means gamma rays), thus the answer should be $\mathrm{NaI}$.