# Hardness vs. density (for Elements)

• jmatejka

#### jmatejka

I heard someone suggest a correlation between the two, my guess is NO direct correlation exists.

Pick an Element on the periodic table, hardness and density do not always correlate. I'm sure atomic lattace structure plays a larger role here.

Diamond is the hardest, but by no means high in density.

Any loose correlations between hardness and density? None that I know of...

Thanks, John

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Why not pick 20 elements at random and make a scatter plot?

ya those 2 definitely do not correlate gold and lead are very dense and very soft .
you cab bite into 24k gold and leave a tooth mark. And what about mercury.

## What is the difference between hardness and density?

Hardness and density are two different physical properties of matter. Hardness refers to the ability of a material to resist deformation, while density is a measure of how tightly packed the particles in a substance are.

## How is hardness measured?

There are several methods for measuring hardness, including the Mohs scale, Brinell scale, and Vickers scale. These methods involve applying a specific amount of pressure or force to the material and measuring how much the material resists or deforms.

## What factors affect the hardness and density of elements?

The hardness and density of elements can be affected by various factors, such as atomic structure, crystal lattice, and temperature. For example, elements with a strong and compact crystal lattice tend to have higher hardness and density.

## Which elements have the highest hardness and density?

The hardest elements on the Mohs scale are diamond and boron, while the densest elements are osmium and iridium. However, it should be noted that hardness and density can vary depending on the form and structure of an element.

## Is there a relationship between hardness and density?

There is not a direct relationship between hardness and density. Some materials may have high hardness but low density, while others may have low hardness but high density. However, in general, materials with high density tend to have higher hardness as well.