Each isotope has a different number of neutrons.
Number of neutrons = Atomic Mass of the astatine isotope - 85
Astatine has 125 neutrons
As for all other elements: neutrons, protons and electrons.
Protons/Electrons: 85 Number of Neutrons: 125
Astatine has 85 protons.
The element with 161 neutrons in period 7 that is NOT found in nature is astatine-215. Astatine-215 is a synthetic element that is artificially produced in laboratories and is not stable enough to exist in nature.
Polonium, which has an atomic number of 84, decays to astatine, which has an atomic number of 85, a negative beta particle is emitted.
85
Astatine is an element with the symbol At.
Some common compounds formed by astatine include hydrogen astatide (HAt), astatine monochloride (AtCl), astatine monobromide (AtBr), and astatine monoxide (At2O). Due to the scarcity and radioactive nature of astatine, its compounds are not commonly studied.
Electrons per shell in astatine: 2, 8, 18, 32, 18, 7.
The color of the element astatine is unknown.
The Latin language name of astatine is astatium.