What is the lightest metal?

Discover the NOVA Hunting the Elements Test. Engage with interactive flashcards and multiple choice questions. Prepare effectively for your assessment!

Multiple Choice

What is the lightest metal?

Explanation:
Lightness here is about density and, for these metals, also about atomic mass. Lithium has the smallest atomic mass (about 6.94 amu) and the lowest density (about 0.53 g/cm³) among the options. Sodium and potassium have higher atomic masses and higher densities, and magnesium is denser still. So lithium stands out as the lightest metal.

Lightness here is about density and, for these metals, also about atomic mass. Lithium has the smallest atomic mass (about 6.94 amu) and the lowest density (about 0.53 g/cm³) among the options. Sodium and potassium have higher atomic masses and higher densities, and magnesium is denser still. So lithium stands out as the lightest metal.

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