Zirconium cannot be broken down by a chemical change, because it is an element. The others are all molecules.
Hope this answers your question Mariaduong159
Radiometric Dating. It's used to find the dates of ricks and other objects based on what the known decay rate of radioactive isotopes. Different forms of this method can also estimate the age of natural and man-made materials.
I think the correct answer from the choices listed above is option A. The chemical property of a vinegar is that the <span>pH of vinegar is around 2.4. It tells something about the concentration of hydrogen ions in the solution. The other choices given only describe the physical properties of the substance.</span>
Answer:
forces is a push or pull upon an object which the object is being interacted
dont see the following objects but made a black hole or a huge object or a hevey object
Explanation:
<u>Answer:</u> The correct answer is Potassium-39, Potassium-40, Potassium-41
<u>Explanation:</u>
Atomic number is defined as the number of protons present in an atom.
Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.
A = Mass number = Number of neutrons + Number of protons.
For the given isotopes of potassium:
Atomic number of potassium is 19.
<u>For potassium-41 isotope:</u>
Mass number = 41
Number of neutrons = 41 - 19 = 22
<u>For potassium-39 isotope:</u>
Mass number = 39
Number of neutrons = 39 - 19 = 20
<u>For potassium-40 isotope:</u>
Mass number = 40
Number of neutrons = 40 - 19 = 21
The most number of neutrons are in potassium-41 isotope and the least number of neutrons are in potassium-39
Hence, the correct answer is Potassium-39, Potassium-40, Potassium-41
