What is the charge of a beta particle? 0 1– 2+ 4+
2 answers:
Answer: Option (b) is the correct answer.
Explanation:
A beta particle is a particle with a negatively charged electron. Symbol of a beta particle is .
An alpha particles is basically a helium nucleus and it contains 2 protons and 2 neutrons.
Symbol of an alpha particle is .
A gamma particle is basically a photon of electromagnetic radiation with a short wavelength.
Symbol of a gamma particle is .
Therefore, we can conclude that the charge of a beta particle is 1-.
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Answer:
After 18 hours, the amount of pure technetium that will be remaining is 12.5 grams
Explanation:
To solve the question, we note that the equation for half life is as follows;
Where:
N(t) = Quantity of the remaining substance = Required quantity
N₀ = Initial radioactive substance quantity = 100 g
t = Time duration = 18 hours
= Half life of the radioactive substance = 6 hours
Therefore, plugging in the values, we have;
Therefore, after 18 hours, the amount of pure technetium that will be remaining = 12.5 grams.