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Which of the Following Is Not Correct

question 478

Multiple Choice

Which of the following is not correct?


Definitions:

Argon

A noble gas element that is colorless, odorless, tasteless, and non-toxic, used in lighting and welding.

Chromium

A chemical element with symbol Cr and atomic number 24, known for its high corrosion resistance and hardness.

Fluorine

A highly reactive, pale yellow gas at room temperature, being the most electronegative and reactive of all the elements.

Francium

A highly radioactive metal with the atomic symbol Fr, the least stable and most rare naturally occurring element in the periodic table.

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