Question #59da9
1 Answer
Here's what I got.
Explanation:
The incomplete nuclear equation given to you
4219K→−0−1e+?
describes the beta decay of potassium-42. You can tell that this is the case because the radioactive nuclide emits an electron, also known as a beta particle.
In beta decay, a neutron located inside the nucleus is converted to a proton. When this happens, the nuclide emits a beta particle and an electron antineutrino,
As a result of the beta decay, the atomic number of the nuclide increases by
)
This means that the balanced nuclear equation that describes the beta decay of potassium-42 looks like this
4219K→4220Ca+−0−1e+¯νe
Notice that you have
42=42+0→ conservation of mass19=20+(−1)→ conservation of charge
