We elaborate the uses of Francium and atomic properties with characteristics. Francium is a chemical element with a metallic appearance with atomic number 87. Its symbol is Fr and it belongs to the group of alkali metals and its usual state in nature is liquid. Francium is located at position 87 on the periodic table.
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On this page you can discover the chemical properties of francium and information about francium and other elements of the periodic table such as cesium, radio, hydrogen or lithium. You will also learn what francium is for and you will know what its uses through its properties associated with francium such as its atomic number or the usual state in which francium can be found.
You will be able to see qualities of francium such as its melting and boiling point, its magnetic properties or what its chemical symbol is. Also, here you will find information about its atomic properties such as the distribution of electrons in the francium atoms and other properties.
For some elements, part of this information is unknown. In these cases we show the properties attributed to them.
Properties of francium
Francium belongs to the group of alkali metals. This group of elements are characterized by having a single electron in its outermost energy level and have a tendency to lose it, thus forming a monopositive ion. This tendency of alkali metals such as francium is due to their low ionization energy and their low electronic affinity.
The state of francium in its natural form is liquid. Francium is a chemical element with a metallic appearance and belongs to the group of alkali metals. The atomic number of francium is 87. The chemical symbol for francium is Fr. The melting point of francium is 300 degrees Kelvin or 27.85 degrees Celsius, or degrees centigrade. The boiling point of francium is 950 degrees Kelvin or 677.85 degrees Celsius or degrees centigrade.
Atomic properties of francium
The atomic mass of an element is determined by the total mass of neutrons and protons that can be found in a single atom belonging to this element. Regarding the position where to find francium within the periodic table of elements, francium is in group 1 and period 7. Francium has an atomic mass of 2.3 u.
The electron configuration of francium is [Rn] 7s1. The electronic configuration of the elements determines the way in which the electrons are structured in the atoms of an element. The atomic radius or Bohr radius of francium is 270 Å pm (Bohr radius) pm and its ionic radius is 194 pm (Fr + hexacoordinated) pm.
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Characteristics of francium
Below you can see a table that shows the main characteristics that francium has.
| Francium | ||
|---|---|---|
| Chemical symbol | Fr | |
| Atomic number | 87 | |
| Group | one | |
| Period | 7 | |
| Appearance | metal | |
| Block | s | |
| Density | 1870 kg / m3 | |
| Atomic mass | 2.3 u | |
| Atomic radio | 2.70 Å pm (Bohr radius) | |
| Ionic radius | 194 pm (Fr +, hexacoordinated) | |
| Electronic configuration | [Rn] 7s1 | |
| Oxidation states | one | |
| Oxide | strong base | |
| Crystal structure | body-centered cubic | |
| State | liquid | |
| Melting point | 300K | |
| Boiling point | 950K | |
| Heat of fusion | 2 kJ / mol | |
| Electronegativity | 0.7 (Pauling) 0.9 (Allred and Rochow) | |
| Electric conductivity | 3 × 106 / m OS / m | |
| Thermal conductivity | 15 W / (Km) | |
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