Igcse Model Questions Vol1 2022 Chemistry Question 6
Practice objective / multiple choice question 6 from the 2022 Igcse Model Questions Vol1 Chemistry examination.
Element A has electronegativity 2.1 and element B has electronegativity 3.5. In a binary compound AB the measured bond length is 180 pm. Using Pauling's equation \(\%\,\text{ionic} = \bigl(1 - e^{-0.25(\Delta EN)^2}\bigr)\times100\) calculate the percent ionic character of the bond (to the nearest whole percent). Then, given that the sum of the ionic radii of A and B is 170 pm and the sum of their covalent radii is 190 pm, decide whether the bond is best described as ionic or covalent.
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This is Igcse Model Questions Vol1 2022 Chemistry Question 6. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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