Glass lasers are formed from
Correct answer: C. Ar and He
- A. Ne and Ar
- B. He and Ne
- C. Ar and He
- D. Any of the noble gas can be used
Explanation
Glass lasers are formed from a combination of argon (Ar) and helium (He) gases. In a glass laser, the active medium consists of a mixture of Ar and He gases enclosed in a glass tube. When an electrical discharge is passed through this mixture, it excites the atoms of Ar and He, leading to the emission of laser light.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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