RADIOACTIVITY Flashcards
The reach stability, the nucleus spontaneously emits particles and energy and transforms itself to another atom.
Radioactive disintegration or Radioactive decay
Atoms involved in radioactivity
Radionuclide
Any nuclear arrangement or the one that was not radioactive
Nuclide
The emission of the particle and energy to reach stability
Radioactivity
What are the sources of naturally occurring radioisotopes?
- Some originated at the time of the Earth’s formation and are still decaying slowly.
Ex. Uranium - Radium - Radon - Cosmic Radiation
This way of reaching stability or radioactivity involves an electrons that is created in the nucleus is ejected from the nucleus with considerable kinetic energy and escapes from the atom.
Beta emission
What happens to ¹³¹ 53 I when it decay to Xenon through beta emission?
¹³¹ 54 Xenon
TRUE OR FALSE:
Alpha emission is a nuclear transformation that results in the changing of an atom from one type of element to another
TRUE
What is more violent? Alpha emission or beta emission?
Alpha emission
An alpha particle consist of how many protons and neutrons?
Two protons and two neutrons
When an radionuclide emits particle through alpha emission how much it emits?
Two units of positive charge and 4 units of mass
Why does alpha emission is also important?
It makes the resulting atom not only chemically different but is also lighter by 4 amu
TRUE OR FALSE:
Radioactive decay results in emission of alpha particles, beta particles and usually gamma emission
TRUE
Why does beta emission occurs much more frequently than alpha emission?
Because only heavy radioisotopes are capable of alpha emission.
1 Bq is equal to?
Disintegration of 1 atom each second