Question

All the following were discovered when their minerals were analyzed by spectroscopic
methods except
(A) Rb
(B) Xe
(C) CS .
(D) Sc​

Answer 1

The correct answer is b) xenon

Explanation:

• Xenon is the correct answer because it was discovered by Morris Travers and Sir William Ramsay in 1989 during the analysis of liquefied air. When the fractional distillation of liquid air was done, Xe was first seen in the residue.

• All the other options are incorrect because all of them were discovered by spectroscopy in one way or the other  

Learn more about the properties of Xenon from the link below

https://brainly.in/question/3526744

Answer 2

Answer:

I think ur frm Sri Chaitanya institution..... Am I right.....