An aluminum nail that is less dense than the element aluminum would not be made of pure aluminum, but would have to be an alloy of aluminum and some other substance. If an aluminum nail is made of pure aluminum, it would have the same density as the "actual" element.
Aluminum.
yep
Aluminium is more dense than PET.
Aluminum is less electronegative than silicon.
maybe proton
No, gold is much more dense that aluminum.
The nucleus of an aluminum atom weights half that of an iron atom. Not only that, but the spacing between aluminum atoms is greater (its fluffier) so the two effects make aluminum less dense.
Oxygen is less dense than selenium. Oxygen has a density of about 1.43 grams per cubic centimeter, while selenium has a density of about 4.81 grams per cubic centimeter.
Hydrogen gas is considered the least dense element. It is less dense than air, which is why it is often used in balloons.
Because it contains a lot of hydrogen. Aluminum is considerably less dense than lead, but a cubic meter of aluminum weighs a lot more than a cubic centimeter of lead because it's so much bigger.
1kg of aluminum occupies more volume than 1kg of lead, as aluminum is less dense than lead. Densities of aluminum and lead are 2.7 g/cm³ and 11.3 g/cm³, respectively.
Sodium is less dense than zinc. Sodium has a density of 0.97 g/cm^3, while zinc has a density of 7.14 g/cm^3.