Francium has 87 protons, and mass numbers ranging from 199 to 232, with the longest lived isotopes having mass numbers of 221 to 223. There are different decay modes for the different isotopes, and without knowing the isotope, we cannot produce an equation.
An isotope hasn't an equation.
There are 87 electrons is Francium. There are also 87 protons, 87 neutrons and, by extension, the atomic number is also 87.
Cobalt has 27 protons and francium has 87 protons; 87-27=60.
The most stable francium isotope (Fr-223) has 87 protons and 136 neutrons.
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
The largest atom is francium and has 87 protons and 87 electrons.
Francium has 87 positively charged protons and 87 negatively charged electrons, plus a varying number of uncharged neutrons, of which 136 is the commonest amount. Number of neutrons = Atomic mass of the isotope - 87
Francium has 87 protons and 87 electrons.
There are 87 electrons is Francium. There are also 87 protons, 87 neutrons and, by extension, the atomic number is also 87.
Francium has 87 electrons.
Francium has 87 protons.
Francium has 87 electrons.
It is not true: francium has 87 protons.
The atomic number of francium is 87.
Francium is the chemical element with the atomic number 87.
The atomic number of francium is 87.
Francium has 87 electrons but the atom is neutral.
The atomic number of francium is 87. This means that it has 87 each of protons and electrons. The number of neutrons depends on the isotope, but the most common one, Fr-223, has 223 - 87 = 136 neutrons. (The number of neutrons is always the isotope mass number minus the atomic number.)