The atomic number of radon is 86. This means there are 86 protons in it. In an atom, the number of protons and electrons are always equal so that their is no net charge on the atom (protons are positively charged and electrons are negatively charged).
Therefore the number of electrons in a radon atom is also 86.
The number of neutrons can be calculated by subtracting the atomic number from the atomic mass. Atomic mass is the sum of all the particles that comprise an atom. Since the mass of electrons is negligible, the atomic mass is equal to the sum of the number of protons and the number of neutrons.
The number of protons is 86 and the atomic mass is 222.
Thus, the number of neutrons is:
222-86
= 136
Hence, there are 136 neutrons in an atom of radon.
Summarizing the whole answer, we can say that in radon, the
No. Of protons is 86;
No. Of electrons is 86; and
No. Of neutrons is 136.
Therefore the number of electrons in a radon atom is also 86.
The number of neutrons can be calculated by subtracting the atomic number from the atomic mass. Atomic mass is the sum of all the particles that comprise an atom. Since the mass of electrons is negligible, the atomic mass is equal to the sum of the number of protons and the number of neutrons.
The number of protons is 86 and the atomic mass is 222.
Thus, the number of neutrons is:
222-86
= 136
Hence, there are 136 neutrons in an atom of radon.
Summarizing the whole answer, we can say that in radon, the
No. Of protons is 86;
No. Of electrons is 86; and
No. Of neutrons is 136.