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MaxineThe Atomic Mass of francium is approximately 223. It is a highly radioactive element and the heaviest known alkali metal.
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Which has a greater atomic mass potassium or francium?
Francium has a greater atomic mass than potassium. Francium has an atomic mass of around 223 u while potassium has an atomic mass of around 39 u.
What is the atomic mass for Francium?
The atomic mass of Francium (Fr) is approximately 223 atomic mass units.
Which element Is an alkali metal with a mass greater than 200?
Francium is an alkali metal with a mass greater than 200 atomic mass units. It is the heaviest alkali metal and is highly radioactive, with a very short half-life.
What compares atomic radius francium or cesium?
The covalent atomic radius of francium is 260 pm.The covalent atomic radius of caesium is 244 pm.
How many protons electrons and neutrons dose francium contain?
Francium has 87 protons and electrons; the number of neutrons is different for each isotope and francium has ca. 40 isotopes ad isomers. Number of neutrons = Atomic mass of the isotope - 87
