Consider the following ion: BrO3−. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why.
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
Consider the following ion: BrO3−.
a) Show the full electron configuration for Br.
b) Draw the most correct Lewis structure for BrO3− and briefly explain why your Lewis
structure is correct.
c) If the structure is stabilised by resonance, draw at least one of the possible resonance
forms. If it is not stabilised by resonance, briefly explain why.
d) What is the electronic geometry of BrO3−? What is its molecular shape?
e) Does BrO3− have a dipole moment? Briefly justify your answer.
f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−?
Briefly explain your answer.
g) Which of the following molecules would you expect to have the lowest vapour
pressure? Briefly explain your choice. (IMAGE WITH POSSIBILITIES)
h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?
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Consider the following ion: BrO3−.
What is the electronic geometry of BrO3−? What is its molecular shape?
e) Does BrO3− have a dipole moment? Briefly justify your answer.
f) On average, would you expect IO3− to have longer or shorter bonds than BrO3−?
Briefly explain your answer.
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