The atomic number of francium is 87.
The metal francium has a much lower melting point than platinum has.
fluorine has the highest electronegativity value (3.98)
This chemical element is francium (Fr).
Francium was named after France, the country it was dicovered in.
Francium is very radioactive and very difficult to obtain; heating of francium due to the decay leads to instantaneous vaporization of francium.
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The electronegativity of francium is 0,7 (after L. Pauling).
The Pauling electronegativity of francium is 0,7 - the smallest value.
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The numerical value of 1 is 1. The numerical value of any figure is its absolute value, ignoring its negative or positive sign.
In Roman numerals the numerical value is 3000
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The covalent atomic radius of francium is 260 pm and this value is not small.
The estimated value of the density of francium at STP is 1,87 g/cm3.