## What should be the ratio of neutron and proton?

between 1:1 and 1.5
They have a neutron/proton ratio between 1:1 and 1.5. As the nucleus gets bigger, the electrostatic repulsions between the protons gets weaker. The nuclear strong force is about 100 times as strong as the electrostatic repulsions.

## When neutron to proton ratio is low the process occur?

When a nucleus has a low neutron to proton ratio, either electron capture or positron emission can occur. Larger nuclei are more likely to undergo electron capture than are smaller nuclei.

Why the ratio between the numbers of neutrons and protons n p of a stable nucleus is always equivalent to or greater than 1?

Elements that have atomic numbers from 20 to 83 are heavy elements, therefore the ratio is different. The ratio is 1.5:1, the reason for this difference is because of the repulsive force between protons: the stronger the repulsion force, the more neutrons are needed to stabilize the nuclei.

What should be the ratio of neutron to proton for stability of heavy nucleus?

around 1:1
Nuclear Stability In general, stable nuclei have approximately equal number of neutrons as protons, and a strong excess of one or the other will result in an unstable nucleus. The ratio of neutrons to protons in a stable nucleus is thus around 1:1 for small nuclei (Z < 20).

### Does the neutron to proton ratio increase?

Nuclei. Neutron to proton ratio of an atomic nucleus is the ratio of the number of neutrons to it’s number of protons. This ratio generally increases with increase in atomic number, in a stable nuclei. Beta decay decreases the ratio of neutron to proton.

### What is the NZ ratio?

The neutronâ€“proton ratio (N/Z ratio or nuclear ratio) of an atomic nucleus is the ratio of its number of neutrons to its number of protons.

Why is the neutron to proton ratio so important?

the 1:1 ratio of protons and neutrons, which leads to the conclusion that a larger number of neutrons helps to increase the strong nuclear force and keep the nucleus stable.

How does neutron:proton ratio affect the stability of isotopes?

For low atomic numbers most stable nuclei have a neutron/proton ratio which is very close to 1. As the atomic number increases, the zone of stability corresponds to a gradually increasing neutron/proton ratio. In the case of the heaviest stable isotope, Bi20983 for instance, the neutron/proton ratio is 1.518.

## How neutron:proton ratio affects the stability of isotopes?

the 1:1 ratio of protons and neutrons, which leads to the conclusion that a larger number of neutrons helps to increase the strong nuclear force and keep the nucleus stable. The roughly linear region in the stability band indicates that the necessary ratio is about 3 neutrons to every 2 protons.

Will neutron to proton ratio increase or decrease in a nucleus?

Therefore, number of neutrons decreases and the number of protons increases. The neutron to proton ratio decreases. In the emission of a positron, a proton is converted into a neutron. Hence the ratio increases.

What is the neutron/proton ratio of a nuclear nucleus?

They have a neutron/proton ratio between 1:1 and 1.5. As the nucleus gets bigger, the electrostatic repulsions between the protons gets weaker. The nuclear strong force is about 100 times as strong as the electrostatic repulsions. It operates over only short distances. After a certain size, the strong force is not able to hold the nucleus together.

### How is nuclear stability related to the neutron-proton ratio?

How is nuclear stability related to the neutron-proton ratio? The nucleus is unstable if the neutron-proton ratio is less than 1:1 or greater than 1.5. At close distances, a strong nuclear force exists between nucleons.

### Which isotopes have the highest neutron-proton ratios?

Hydrogen-1 ( N / Z ratio = 0) and helium-3 ( N / Z ratio = 0.5) are the only stable isotopes with neutronâ€“proton ratio under one. Uranium-238 has the highest N / Z ratio of any primordial nuclide at 1.587, while lead-208 has the highest N / Z ratio of any known stable isotope at 1.537.

Why is the nucleus unstable when there are more protons?

The nucleus is unstable if the neutron-proton ratio is less than 1:1 or greater than 1.5. At close distances, a strong nuclear force exists between nucleons. This attractive force comes from the neutrons. More protons in the nucleus need more neutrons to bind the nucleus together.