-4
Explanation:
If a radioactive isotope undergoes alpha decay, it's mass number will change by -4.
The mass number of a nuclei is the sum of its number of protons and neutrons.
An alpha particle is similar of a helium atom:
⁴₂He
The atom above is made up of:
mass number = 4
Atomic number = 2
Number of protons = 2
Number of neutrons = 2
Number of electrons = 2
If a substance is undergoing radioactive decay, the mass number of the product will decrease by 4 and the atomic number will decrease by 2.
In nuclear equations, mass and atomic numbers are usually conserved.
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Transmutation brainly.com/question/3433940
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The answer is:
use symbols
are a good resource for long-range planning
are used by meteorologists to create other maps
Unlike normal map, newspaper map would include additional information regarding weather prediction or general climate that would most likely occurs at certain location. The prediction would be based on the information provided by trusted meteorologist.
This would be perfect to use if you want to make a long term plan for vacations or outdoor events.
Answer:
Replication
Explanation:
The process by which DNA is copied to RNA is called transcription, and that by which RNA is used to produce proteins is called translation.
The electron is.
The electron is the subatomic particle most famous for characteristic behaviors observed in the context of chemical bonding.