> **PROTOTYPE:** a suggestion, not an official CIAAW or IUPAC page. Official values are at [ciaaw.org](https://ciaaw.org).

# francium

| Property | Value |
| --- | --- |
| Symbol | Fr |
| Atomic number | 87 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Francium` |
| Wikidata | [Q671](https://www.wikidata.org/wiki/Q671) |
| Longest-lived isotope | 223 |

## Standard atomic weight

The table gives no standard atomic weight for this element.

## Isotopes

The table lists no isotopic composition for this element.

## Turtle

This resource as a file: [Francium.ttl](Francium.ttl)

```turtle
# Prototype: a suggestion, not an official CIAAW or IUPAC record. Official values are at https://ciaaw.org

@prefix chemrof: <https://w3id.org/chemrof/> .
@prefix ciaaw: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/ciaaw-draft#> .
@prefix element: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

element:Francium a chemrof:ChemicalElement ;
    rdfs:label "francium"@en ;
    ciaaw:longestLivedMassNumber 223 ;
    chemrof:atomic_number 87 ;
    chemrof:symbol "Fr" .
```

[All atomic weights](../atomic-weights.md) · [All isotopic abundances](../isotopic-abundances.md)