Isotopes: What do atoms of the same element (isotopes) have in common? Focus on nuclear composition and atomic number vs. mass number for isotopic nuclides. Choose the correct option.

Q: Isotopes: What do atoms of the same element (isotopes) have in common? Focus on nuclear composition and atomic number vs. mass number for isotopic nuclides. Choose the correct option.

Concept Isotopes: same Z (protons), different N (neutrons) ⇒ different mass number A = Z + N. Example Carbon-12 and Carbon-14 both have Z = 6 but N = 6 and 8 respectively. Final Answer The same number of protons (atomic number) but different neutrons

Difficulty: Easy

The same number of neutrons but different protons
The same number of protons (atomic number) but different neutrons
Different numbers of electrons in neutral atoms
Identical mass numbers but different atomic numbers

Correct Answer: The same number of protons (atomic number) but different neutrons

Explanation:

Concept
Isotopes: same Z (protons), different N (neutrons) ⇒ different mass number A = Z + N.

Example
Carbon-12 and Carbon-14 both have Z = 6 but N = 6 and 8 respectively.

Final Answer
The same number of protons (atomic number) but different neutrons

← Previous Question Next Question→

More Questions from Physics

Acoustics: Order of increasing speed of sound across media Considering typical room conditions, arrange media so that the velocity of sound increases in the correct order from least to greatest. Choose the correct option.
Sound intensity: What is the correct physical unit for intensity of sound? Recall that intensity is acoustic power transmitted per unit area, not a subjective level measure. Choose the correct option.
Astronomical measures: A light-year is a unit of what physical quantity? Definition applies to distances in interstellar/galactic scales. Choose the correct option.
Optics and media: In which medium does light travel at the maximum speed? Assume standard, non-dispersive comparison among common media. Choose the correct option.
Boiling and altitude: Why does cooking take longer in the hills than in the plains? Assume open-vessel boiling and typical high-altitude atmospheric conditions. Choose the correct option.
Thermal sensation vs. temperature: Why does a metal pen cap feel colder than its plastic body at the same room temperature (15°C)? Explain the sensory reason though both parts are at 15°C in equilibrium. Choose the correct option.
Dimensional formula identification: ML²T⁻² corresponds to which physical quantity? Use standard M–L–T dimensional analysis for mechanical quantities. Choose the correct option.
Dimensional analysis MCQ: Pick the pair whose quantities do NOT have identical dimensions. Compare each pair using M–L–T dimensional formulae and identify the mismatch. Choose the correct option.
Astronomical instruments: What do large astronomical telescopes use as the objective? Consider modern observatory-class instruments designed for faint, distant objects. Choose the correct option.
Thermometry: Why is mercury commonly used as a thermometric liquid instead of water? Select the most appropriate combined reason relevant to laboratory/clinical thermometers. Choose the correct option.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion