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WAEC Chemistry 2021 Objective — Question 45

Question 45 of 50 from the West African Examinations Council (WAEC) Chemistry 2021 Objective paper, with the correct answer and a full explanation.

45. The isotopes of neon are represented by the symbols ₁₀²⁰Ne, ₁₀ʸNe, and ₁₀²²Ne. The relationship between x, y and z is

A. x>y>z.
B. xy<z.
C. x=y=z.Correct
D. x<z<y.

Explanation

Isotopes of the same element have identical proton (atomic) numbers, so x=y=z.

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