By an even number.
4 protons and 4 neutrons
by the atomic number which determines the number of protons. a stable atom will have an equal number of electrons as protons. if there are more or less, it is an ion
The majority of stable atoms have slightly more neutrons than protons, but the numbers are similar. The biggest exception is hydrogen, which has a stable isotope having one proton and no neutrons. Many of the lighter elements have stable isotopes in which the number of protons and the number of neutrons is the same. But as the elements get heavier, we increasingly find that stable isotopes have more neutrons than protons. This is an understandable pattern. Protons, all of which have a positive charge, repel each other. It is the neutrons which act as a kind of nuclear glue, holding the nucleus together against the repulsive force that protons exert on each other. As the nucleus gets bigger, more neutrons are needed to hold it together.
When atoms have a balanced number of protons and neutrons, they are more likely to be stable. The nucleus of the atom is more stable when it has a balanced ratio of protons to neutrons, as this allows for a stronger nuclear force and reduces the likelihood of decay or instability.
Most atoms, in their most stable form, will have an equal number of Electrons and Protons. (Protons are Positively charged, Electrons are Negatively charged)
4 protons and 4 neutrons
There are 41 protons in Niobium. The atomic number is the same as the number of protons.
On the contrary, deuterium is stable.
Protons are within the nucleus
A stable one.
the element is stable.
by the atomic number which determines the number of protons. a stable atom will have an equal number of electrons as protons. if there are more or less, it is an ion
The majority of stable atoms have slightly more neutrons than protons, but the numbers are similar. The biggest exception is hydrogen, which has a stable isotope having one proton and no neutrons. Many of the lighter elements have stable isotopes in which the number of protons and the number of neutrons is the same. But as the elements get heavier, we increasingly find that stable isotopes have more neutrons than protons. This is an understandable pattern. Protons, all of which have a positive charge, repel each other. It is the neutrons which act as a kind of nuclear glue, holding the nucleus together against the repulsive force that protons exert on each other. As the nucleus gets bigger, more neutrons are needed to hold it together.
Not all isotopes of gold are stable. Getting into the details is fairly complicated, but in essence it boils down to this: certain combinations of protons and neutrons are stable, and others aren't. For gold, there are stable combinations. For some other elements, it turns out that there is no number of neutrons that can stabilize that particular number of protons (francium, for example, has no stable isotopes).
The atomic number equals the number of protons in an atom, as well as the number of electrons in a stable, electrically neutral atom, it represents the identity of an element ,the simplest form of matter.
When atoms have a balanced number of protons and neutrons, they are more likely to be stable. The nucleus of the atom is more stable when it has a balanced ratio of protons to neutrons, as this allows for a stronger nuclear force and reduces the likelihood of decay or instability.
40 protons and 40 electrons.The most stable isotope of zirconium (Zr-91) has 51 protons.