What element is the lowest on the periodic table?

What element is the lowest on the periodic table?

helium
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

What has the lowest density of all elements?

hydrogen
Under ordinary conditions, the least dense element is hydrogen, while the densest element is either osmium or iridium.

What are elements that have the lowest densities of all metals?

The lightest or least dense metal that is a pure element is lithium, which has a density of 0.534 g/cm3. This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water. Two other metallic elements are less dense than water.

Which of the following has lowest density?

Hydrogen is the element with the lowest density in the periodic table and exists as a gas and osmium is the element with the highest density.

Which is the least dense metal?

lithium
Under standard conditions, lithium is the lightest metal and the least dense solid element. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements.

What is the lowest density solid?

graphene aerogel
The world’s least dense solid is a graphene aerogel with a density of just 0.16 mg/cm³; produced by a research team from the Department of Polymer Science and Engineering lab at Zhejiang University, China, headed up by Professor Gao Chao (China). The material was announced in Nature magazine on 27 February 2013.E

What has the lowest density solid liquid or gas?

Notice that the solid (steel) is the most dense, the gas (air) is the least dense, and the density of the liquid (water) is in between.

What is the least dense metal?

What is the lowest density liquid?

Ignoring STP, the least dense liquid is liquid hydrogen, at about 70g/liter (. 07g/cm3). That’s still 5 times denser than Tungsten hexafluoride.Farv

What element has the greatest density?

osmium
The density of an element is the amount of mass it has per unit volume. Normally this is measured in g cm−3 and at room temperature. Values are shown relative to osmium, the element with the highest density.

What elements are less dense than water?

lithium, sodium and potassium are less dense than water so they float on the surface of the water. the metals move about the surface of the water and fizz as hydrogen gas is produced.

What element has the lowest density?

Atomic Number. For chemistry students and teachers: The tabular chart on the right is arranged by Atomic number. The first chemical element with the lowest density is Hydrogen and the highest density is Osmium.

What does least dense mean?

Least dense means the one that is at the top. Wood floats on top of water, so wood would be the least dense. Water has a density of 1 and the others would all sink, so they’re more dense.

What planet is the least dense?

All of the terrestrial planets have densities greater than that of rock. Mars is the least dense of the terrestrial planets, and consists of only about 30% metal. Saturn is less dense than water.

What is the most dense element in the world?

Osmium: The densest stable element on earth. The most naturally occurring densest element on earth is Osmium (Os). The name is derived from the Greek word ‘Osme’ meaning smell. It is a very hard and bluish-white metal.