release particles & gamma rays , A+
There generally isn't a problem; the more protons an atom has, the more neutrons it takes to glue them together. A Helium atom has two protons and generally two neutrons; in every other stable atom, there are more neutrons than protons. There are isotopes of elements with fewer-than-normal numbers of neutrons; these isotopes are generally unstable and radioactive, and will generally decay into other elements.
Neutrons are part of the nucleus itself, and electrons circle the nucleus
Protons, electrons, and neutrons are the subatomic particles that are involved in nuclear reactions.
If the number of protons exceeds the number of neutrons, the atom itself is neutral in charge because protons are positively charged and neutrons are neutral. However, if you're referring to charged particles, an excess of protons (compared to electrons) would result in a positive charge for the atom, making it a cation. In summary, an atom's charge is determined by the balance between protons and electrons, not neutrons.
Protons exist in the nucleus of an atom, which is the central core that also contains neutrons. Together, protons and neutrons make up the bulk of an atom's mass. Protons carry a positive electric charge, which helps determine the atom's identity and its interactions with other atoms. The number of protons in the nucleus defines the atomic number and thus the element itself.
There generally isn't a problem; the more protons an atom has, the more neutrons it takes to glue them together. A Helium atom has two protons and generally two neutrons; in every other stable atom, there are more neutrons than protons. There are isotopes of elements with fewer-than-normal numbers of neutrons; these isotopes are generally unstable and radioactive, and will generally decay into other elements.
Neutrons are part of the nucleus itself, and electrons circle the nucleus
Protons, electrons, and neutrons are the subatomic particles that are involved in nuclear reactions.
It varies depending on the atom but basically there are the same number of neutrons as there are protons. Helium has two protons, two electrons, and two neutrons. The difference between the atomic mass and the atomic number equals the atom's number of neutrons. Consider hydrogen, for example. Standard hydrogen has no neutrons, just one proton. Deuterium is an isotope of hydrogen with one neutron, and tritium (which is unstable) has two neutrons. Carbon 12 has six protons and six neutrons, but carbon 14 (which is unstable) has six protons and eight neutrons. As you move up the periodic table, nuclei tend to have more neutrons than protons. 92 U 238, for example, has 146 neutrons.
If the number of protons exceeds the number of neutrons, the atom itself is neutral in charge because protons are positively charged and neutrons are neutral. However, if you're referring to charged particles, an excess of protons (compared to electrons) would result in a positive charge for the atom, making it a cation. In summary, an atom's charge is determined by the balance between protons and electrons, not neutrons.
Protons and neutrons are located at an atom's nucleus. These particles are responsible for the mass of the atom and contribute to its stability. The nucleus itself is surrounded by a cloud of electrons that orbit around it.
7 protons 7 electrons 8 neutrons
Iodine itself is an element, and therefore it has no ingredients other than protons, neutrons, electrons, and atoms.
Atomic numbers are determined by the number of protons an atom has. The mass number is determined by the number of protons and neutrons. While the number of protons can't change (as the element itself would change), neutrons can and do vary. These are called isotopes.
Protons exist in the nucleus of an atom, which is the central core that also contains neutrons. Together, protons and neutrons make up the bulk of an atom's mass. Protons carry a positive electric charge, which helps determine the atom's identity and its interactions with other atoms. The number of protons in the nucleus defines the atomic number and thus the element itself.
The atomic nucleus itself has a positive charge. The protons in the nucleus also have a positive charge (the neutrons are neutral). Both protons and neutrons contain "up" quarks, which have a positive charge (the "down" quarks have a negative charge).
The atomic mass unit is defined to be 1/12 of the mass of a carbon-12 atom. Atomic masses can determined by weighing molar amount of an isotope. Absolute masses (in kg) are determined by measuring the amount that charged atoms are deflected by magnets, since if you know the charge you can calculate mass from the amount of deflection.