Waec Model Questions Vol1 2024 Chemistry Question 18

Practice objective / multiple choice question 18 from the 2024 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 18 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

A binary compound XY₄ is known to be tetrahedral in shape. Its molar mass is 240 g·mol⁻¹ and the atomic mass of element X is 60 g·mol⁻¹. Determine (a) the oxidation state of X, (b) the hybridisation of the central X atom, and (c) the X-Y bond length if the ionic radius of X is 0.075 nm and that of Y is 0.140 nm. Assume the bond length equals the sum of the two ionic radii.

Answer Options

Correct Answer A. Oxidation state of X = +4; hybridisation = sp³; bond length = 0.215 nm
B. Oxidation state of X = +2; hybridisation = sp³; bond length = 0.215 nm
C. Oxidation state of X = +4; hybridisation = sp²; bond length = 0.215 nm
D. Oxidation state of X = +4; hybridisation = sp³; bond length = 0.225 nm
Correct Answer
A
Correct Option:
Oxidation state of X = +4; hybridisation = sp³; bond length = 0.215 nm

About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 18. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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