General Science • ChemistryHard
Which of the following statements regarding isotopes of an element is chemically accurate?
A. They have different atomic numbers but identical mass numbers
B. They possess identical chemical properties due to the same number of valence electrons✓ Correct Answer
C. They exhibit completely different positions in the modern periodic table
D. They contain different numbers of protons in their atomic nuclei
💡 Solution & Explanation
Isotopes are atoms of the same element having identical atomic numbers and electronic configurations, which gives them identical chemical properties, but different mass numbers due to varying neutron counts. Since chemical reactivity is dictated by valence electrons, isotopes react in nearly identical ways. They occupy the exact same box in the periodic table.
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