Actinium

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Chemical Symbol:   Ac
Atomic Number:   89
Atomic Weight:   227
Melting Point:    °C
Boiling Point:   3200 °C
Density of Solid:     10060 kg m-3
Electron Configuration:     1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 6d1 7s2

Abundance

Amount in average human body (70kg):   

0 mg

Average amount in Earth's crust:    5.5E-10 ppm by mass
Average amount in seawater:   

0 µg L-1

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Periodic Table


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This page was last changed on: 02 August 2021.

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