The ions which have the highest and shortest N − O length from the given list have to be determined. Concept Introduction: Fractional bond order: The molecules which have resonance structures possess fractional bond order. Bond order between any bonded pair of atoms X and Y: B o n d o r d e r = n u m b e r o f s h a r e d p a i r s i n a l l X − Y b o n d s n u m b e r o f X − Y l i n k s i n t h e m o l e c u l e o r i o n Bond length is inversely proportional to the bond order. A higher bond order results in a shorter bond for a given pair of atoms.

Question

3. An unknown element, X, combines with chlorine to give a substance with the formula XC14. A chlorine analysis of the substance indicates that it contains 83.47% chlorine by mass. What element is X and what is the formula of this compound? (Hint: to identify an element or compound, identify its molar mass. Remember that Molar Mass = (grams A)/(moles A). Solve for each individually and then divide them to find molar mass.)

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Question

Chapter 8, Problem 47PS

Interpretation Introduction

Interpretation:

The ions which have the highest and shortest N−O length from the given list have to be determined.

Concept Introduction:

Fractional bond order: The molecules which have resonance structures possess fractional bond order.

Bond order between any bonded pair of atoms X and Y:

Bond order = number of shared pairs in all X−Y bondsnumber of X−Ylinks in the molecule or ion

Bond length is inversely proportional to the bond order.

A higher bond order results in a shorter bond for a given pair of atoms.

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