| Name | Neptunium |
|---|---|
| Number | 93 |
| Symbol | Np |
| Memory sentence | Neptunian pitchfork. Neptune's trident is 9' long with 3 prongs. Memorize Uranus, Neptune, and Pluto (the planets in a row) for 92, 93, 94. |
Tags: group:actinoids, period:7
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