General Science - Physics (Basics)
Which of the following pairs of elements are isotopes of each other?
Which of the following pairs of elements are isotopes of each other?
hard Q9 of 15
Step-by-Step Solution
Step 1: Understand isotopes
Isotopes are atoms of the same element with the same atomic number but different mass numbers.Step 2: Analyze pairs
Carbon-12 and Carbon-14 have atomic number 6 but different mass numbers, so they are isotopes. Chlorine and Argon are different elements. Oxygen and Sulfur are different elements. Hydrogen and Helium are different elements.Final Answer:
Carbon-12 and Carbon-14 → Option DQuick Check:
Isotopes = Same element, different mass number ✅
Quick Trick: Isotopes differ in neutrons but have same atomic number.
Common Mistakes:
- Confusing isotopes with isobars or different elements with same mass number.
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