Elements

Neptunium - Np

The element Neptunium, atomic number 93, is formed from manmade, which results from particle accelerator.

1. Name:
2. Neptunium

1. Symbol:
2. Np

1. Atomic number (protons):
2. 93

1. How created:
2. manmade

1. Process:
2. particle accelerator

1. Period (row):
2. 7

1. Atomic weight:
2. 237.000000000

1. Melting point:
2. 917 K

1. Boiling point:
2. 4273 K

1. Density:
2. 20.4500000 g/cm³

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