# Are isotopes the same as protons?

## Are isotopes the same as protons?

Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.

Is a proton the largest?

If by “biggest” and “smallest”, you mean mass (which is a measure of how much matter is there), then the smallest is the hydrogen atom with one proton and one electron. Since electrons are about 2000 times less massive than protons (and neutrons), then the mass of an atom is mostly from the protons and neutrons.

### How many protons does an isotope?

Atoms of the same element that contain the same number of protons, but different numbers of neutrons, are known as isotopes. Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2).

Can an isotope have less protons?

According to Wikipedia: Other than protium (ordinary hydrogen), helium-3 is the only stable isotope of any element with more protons than neutrons. For an atomic nucleus to be stable, the repulsive force between protons must be less than the binding energy. This doesn’t really make any sense.

#### Which has the greater mass a proton or an electron?

proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.

What is the smallest particle of the compound water?

molecule
The smallest particle of a compound is called a molecule. A compound is made up of two or more different chemical elements, e.g., a water molecule…

## Is a proton Big or small?

The proton, that little positively-charged nugget inside an atom, is fractions of a quadrillionth of a meter smaller than anyone thought, according to new research appearing Nov. 7 in Nature.

Whats bigger proton or neutron?

High on this list are the masses of subatomic particles. Dozens of particles are known to physicists, but the most familiar are the constituents of atoms: electrons, protons and neutrons. The neutron is very slightly heavier than the proton, by about 0.1%, or 1.00137841887 according to the best measurements.

### Do isotopes have more neutrons than protons?

The stable isotopes of the heavier element have a great surplus of neutrons compared to the number of protons. There has to be a balance between the number of neutrons and the number of protons. That proper balance involves approximately 50 percent more neutrons than protons.

Can isotopes have less neutrons than protons?

Many elements have isotopes with fewer neutrons than protons. However, most of those are unstable.

#### Is a proton heavier than a neutron?

The neutron is very slightly heavier than the proton, by about 0.1%, or 1.00137841887 according to the best measurements. The neutron, as it happens, has a little more mass (and thus energy) than a proton and an electron combined.

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