객관식
How many neutrons are contained in the isotope molybdenum-96 (Mo-96)?
123
views
2. Atoms & Elements
Isotopes
Multiple Choice
Which phrase best describes the element carbon-14?
A
A molecule containing 14 carbon atoms
B
An isotope of carbon with 6 protons and 8 neutrons
C
A stable isotope of carbon with 7 protons and 7 neutrons
D
An ion of carbon with 14 electrons
검증된 단계별 안내1
Understand that carbon-14 refers to a specific form of the element carbon, characterized by its atomic structure.
Recall that the atomic number of carbon is 6, which means every carbon atom has 6 protons.
Recognize that the number 14 in carbon-14 represents the mass number, which is the sum of protons and neutrons in the nucleus.
Calculate the number of neutrons by subtracting the number of protons from the mass number: \(\text{neutrons} = 14 - 6\).
Conclude that carbon-14 is an isotope of carbon with 6 protons and 8 neutrons, distinguishing it from other isotopes by its neutron count.
Related Videos
Related Practice
