Facts about Neptunium

1 Facts

1.1 Interesting Facts

1.2 Sources

1.3 History

1.3.1 Who Discovered

1.3.2 Discovery

1.4 Abundance

1.4.1 Abundance In Universe

1.2.4 Abundance In Sun

1.2.6 Abundance In Meteorites

1.2.7 Abundance In Earth's Crust

1.2.8 Abundance In Oceans

1.2.9 Abundance In Humans