100 lb/kg iron weight replaced with other elements | Density comparison | How much will it weigh?

How much would an element weigh if a 100 pound gym dumbbell weight was replaced with a different element from the periodic table. Periodic table weight comparison. If a 100 pound iron dumbbell was replaced with gold it would weigh 245 pounds. Similarly if a 100 kilogram iron dumbell was replaced with gold it would weigh 245 kilograms.
Majority of inset photos from various authors on Wikimedia under the following licenses:
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[@KickAssScience92]

In this video I mentioned pounds instead of kilograms but the ratio is the same. If a 100 pound dumbbell was replaced with gold it will weigh 245 pounds. If a 100 kilogram dumbbell was replaced with gold it would weigh 245 kilograms. The ratio does not change. Just substitute pounds with kilograms.

[@whitecrow902]

cool video

[@KickAssScience92]

Thanks!

[@UQRXD]

Interesting to note steel is much stronger than iron but weighs less. Iron does have a very strong atomic bond. The lower the atomic number the lighter.

[@KickAssScience92]

True but iron rusts easily :) Caesium has an atomic #55 at 1.89 g/cm3 but iron has a lower atomic #26 at 7.87 g/cm3.

[@sebastjansslavitis3898]

why you using outdated lbs measurements, all developed countries have switched to kg

[@KickAssScience92]

The ratio is the same. 100 lbs or kg of iron replaced with gold will weigh 245 lbs or kg