Neco Model Questions Vol1 2018 Chemistry Question 3
Practice objective / multiple choice question 3 from the 2018 Neco Model Questions Vol1 Chemistry examination.
A molecule AB\(_3\) is colourless, has a trigonal planar geometry and an average A-B bond length of 1.28 Å. Spectroscopic data indicate that each A-B bond has a bond order of 1.33. Another molecule AB\(_4\) is colourless, has a tetrahedral geometry and an A-B bond length of 1.48 Å. Assuming that element A belongs to the second period and element B is a halogen, determine (i) the oxidation state of A in AB\(_4\), (ii) the hybridisation of A in AB\(_3\), and (iii) the number of resonance structures that give the observed bond order in AB\(_3\).
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About This Question
This is Neco Model Questions Vol1 2018 Chemistry Question 3. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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