Waec Model Questions Vol1 2021 Chemistry Question 46

Practice objective / multiple choice question 46 from the 2021 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Medium Difficulty

Question 46 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective

A binary compound XY exhibits 30 % ionic character. The electronegativity of element X is 2.10. Using the relation % ionic = (1 - e^{‑0.25(Δχ)^2}) × 100, where Δχ is the electronegativity difference between the two elements, determine the electronegativity of element Y.

Answer Options

A. ≈ 4.12

Correct Answer B. ≈ 3.29

C. ≈ 2.85

D. ≈ 1.97

Correct Answer

Correct Option:

≈ 3.29

About This Question

This is Waec Model Questions Vol1 2021 Chemistry Question 46. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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Waec Model Questions Vol1 2021 Chemistry Question 46

A binary compound XY exhibits 30 % ionic character. The electronegativity of element X is 2.10. Using the relation % ionic = (1 - e^{‑0.25(Δχ)^2}) × 100, where Δχ is the electronegativity difference between the two elements, determine the electronegativity of element Y.

Answer Options

About This Question

Master the Exam!

A binary compound XY exhibits 30 % ionic character. The electronegativity of element X is 2.10. Using the relation % ionic = (1 - e^{‑0.25(Δχ)^2}) × 100, where Δχ is the electronegativity difference between the two elements, determine the electronegativity of element Y.