Isotopes A (chlorine-33), C (chlorine-37), and D (potassium-38) have distinct mass numbers, reflecting their different neutron counts despite having the same atomic number. Isotope B (calcium-40) is also an isotope but is stable and commonly found in nature.
Among the given notations, A, B, C, and D represent isotopes based on their atomic compositions. Isotopes have the same number of protons (denoted by the atomic number) but different numbers of neutrons, leading to variations in mass numbers.
Isotope A (17A33): This indicates an isotope of an element with atomic number 17, suggesting it is a chlorine isotope. The mass number is 33, implying 17 protons and 16 neutrons. Chlorine-33 is the likely isotope.
Isotope B (20B40): With an atomic number of 20, it corresponds to calcium. The mass number 40 indicates 20 protons and 20 neutrons. This isotope is calcium-40, a stable and common form of calcium.
Isotope C (17C37): Similar to Isotope A, it represents a chlorine isotope with atomic number 17. The mass number is 37, implying 17 protons and 20 neutrons. This isotope is likely chlorine-37.
Isotope D (19D38): This corresponds to an element with atomic number 19, which is potassium. The mass number 38 indicates 19 protons and 19 neutrons. This isotope is potentially potassium-38.
The question probable may be:
Identify the Isotopes out of A, B, C and D .
17A33 20B40 17C37 19D38