Question:
An element naturally occurs in two isotopic forms. Which of the following statements is correct?
An element naturally occurs in two isotopic forms. Which of the following statements is correct?
Show Hint
Isotopes = same protons (Z), different neutrons → different mass numbers.
Updated On: Feb 18, 2026
- Mass number of the two isotopes are same.
- Atomic number of the two isotopes are same.
- Number of nucleons are same.
- Number of neutrons are same.
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The Correct Option is B
Solution and Explanation
Step 1: Definition of isotopes.
Isotopes are atoms of the same element that have the same atomic number (same protons) but different mass numbers (different neutrons).
Step 2: Analyze options.
- (1) Wrong: mass number differs in isotopes.
- (2) Correct: atomic number is identical (same element).
- (3) Wrong: nucleon number (mass number) differs.
- (4) Wrong: neutrons differ.
Final Answer: \[ \boxed{\text{Atomic number of the two isotopes are same}} \]
Isotopes are atoms of the same element that have the same atomic number (same protons) but different mass numbers (different neutrons).
Step 2: Analyze options.
- (1) Wrong: mass number differs in isotopes.
- (2) Correct: atomic number is identical (same element).
- (3) Wrong: nucleon number (mass number) differs.
- (4) Wrong: neutrons differ.
Final Answer: \[ \boxed{\text{Atomic number of the two isotopes are same}} \]
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