# How do you know which mode of decay is most likely?

## How do you know which mode of decay is most likely?

The most likely mode of decay for a neutron-rich nucleus is one that converts a neutron into a proton. Every neutron-rich radioactive isotope with an atomic number smaller 83 decays by electron (�/i>-) emission. C, 32P, and 35S, for example, are all neutron-rich nuclei that decay by the emission of an electron.

What is the most likely decay mode of 20na?

The expected mode of decay for sodium–20 is either positron emission or electron capture, which will decrease the number of protons.

### What is the most likely mode of decay for chlorine 41?

The expected mode of decay for chlorine–41 is beta decay, which will increase the number of protons.

What is the daughter nuclide?

A nuclide before disintegration is called a parent nuclide and that after disintegration is called a daughter nuclide. A nuclide whose daughter nuclide is energetically unstable repeats disintegration until becoming energetically stable. Radioactive.

#### What is the mode of radioactive decay?

Radioactive decay occurs when an unstable atomic nucleus loses energy by emitting energy in the form of emitted particles or electromagnetic waves, called radiation. Isotopes are atoms of the same element (thereby having the same number of protons) which differ in the number of neutrons in their nucleus.

Is chlorine-37 an isotope?

There are two stable isotopes, 35Cl (75.77%) and 37Cl (24.23%), giving chlorine a standard atomic weight of 35.45.

## How to predict the mode of decay of Flourine?

The first step in predicting the mode of decay of a nuclide is to decide whether the nuclide is neutron rich or neutron poor. This can be done by comparing the mass number of the nuclide with the atomic weight of the element. (a) The atomic weight of flourine is 18.998 amu.

How to predict the mode of decay of a nuclide?

Answer The first step in predicting the mode of decay of a nuclide is to decide whether the nuclide is neutron rich or neutron poor. This can be done by comparing the mass number of the nuclide with the atomic weight of the element.

### Why is 17F expected to decay by positron emission?

Because it is a relatively light nuclide, 17F might be expected to decay by positron emission: (b) The atomic weight of silver is 107.868 amu. Because the mass of the 105Ag nuclide is smaller than the average silver atom, this nuclide contains fewer neutrons than the stable isotopes of silver.

How is 105Ag likely to decay by electron capture?

Since 105Ag is a relatively heavy neutron-poor nuclide, we expect it to decay by electron capture: (c) The atomic weight of tantalum is 180.948 amu. The 185Ta isotope is therefore likely to be a neutron-rich isotope, which decays by elelctron emission: