If the atomic number of an element is six and the atomic mass is 15, how many neutrons does it have?
6 Neutrons
9 Neutrons
15 Neutrons
The number of neutrons can be calculated by subtracting the atomic number from the atomic mass.
Therefore, the element with an atomic number of 6 and an atomic mass of 15 would have:
15 - 6 = 9 neutrons.
So the correct answer is 9 neutrons.
To determine the number of neutrons, you need to subtract the atomic number from the atomic mass. In this case, the atomic number is 6, and the atomic mass is 15.
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 15 - 6 = 9 Neutrons
Therefore, the element has 9 neutrons.
To determine the number of neutrons in an atom, you need to subtract the atomic number from the atomic mass. The atomic number represents the number of protons in an atom, while the atomic mass represents the combined mass of protons and neutrons.
In this case, the atomic number is six, meaning there are six protons. The atomic mass is 15. Subtracting the atomic number (6) from the atomic mass (15) gives us 9 neutrons.
Therefore, the correct answer is 9 neutrons.