Home › NPCIL Trainee › Chemistry › Representative Metals, Metalloids, and Nonmetals › Which alkali metal has the lowest density of any…
Which alkali metal has the lowest density of any metal?
ASodium
BPotassium
CCesium
DLithium
Answer & Solution
Correct answer: D. Lithium
1. Alkali metals (group 1) are unusually soft and light compared to most other metals.
2. The text states: "lithium...has the lowest density of any metal (0.5 g/cm3)."
3. This is why lithium famously floats even on paraffin oil, which is itself a low-density liquid.
4. So among the alkali metals -- and among all metals -- lithium has the lowest density.
_Source: OpenStax Chemistry Ch 18 "Representative Metals, Metalloids, and Nonmetals", p.966 §18.1 Periodicity_
Related questions
A reaction in which the same element is simultaneously oxidized and reduced is called a:About half of the world's zinc production is used for what purpose?Under normal chemical conditions, why do nonmetals not form monatomic cations (positive ioBronze and solder are two well-known alloys of tin. What are their respective co-metals?An alloy of mercury with one or more other metals is called a(n):Solid carbon dioxide exists as discrete molecules held together by weak intermolecular forBy mass, silicon makes up close to what fraction of the earth's crust, ranking second in aBoron's outer electron structure is 2s²2p¹, giving it one less valence electron than valen