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Which of the following noble gases is least likely to react with fluorine?
Epicardium
The outermost layer of the heart wall, forming part of the heart's protective covering and contributing to the heart's lubrication system.
Endocardium
The innermost layer of tissue that lines the chambers of the heart.
Chambers
Spaces within an organ or a device; in the context of the heart, refers to the four cavities (two atria and two ventricles) responsible for pumping blood.
Pericardium
The double-layered sac containing the heart and the roots of the great vessels, providing protection and support to the heart.
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