8) The best Lewis structure of SF4 shows that the central sualfur atom has bondi

Question

8) The best Lewis structure of SF4 shows that the central sualfur atom has bonding electron pairs. nonbonding and A) 4.0 B) 0.4 C) 4.1 D) 0,5 E)L.4 9) The molecular geometry of the ST4 moiecule (in the above problem) is and this molecule is A) see saw, polar B) trigonal bipyramidal, polar C) terigonal bipyramidal, nonpolar D) see saw, nonpolar E) tetrahedral, nonpolar ion? 10) How many equivalent resonance forms can be drawn for the best lewis structure of the nitrate ?) ? C) 2 D) 1 II) The formal charge an the nitrogen atom in the question above (nitrate ion) is A)-2 B)-1 C)0 D) +1 E) +2 unbonded electron pairs and 12) The xenon atom in the xenon tetrafluoride molecule has bonded electron pairs in its valence shell A) 4, 2 B) 14 C) 2.4 D) 4,0 E) 4.1 13) Of the following molecules, onlyis polar. A) Clz B) BCl3 D) Beclz E None of the above are polar

Explanation / Answer

Question 8)

Answer : option B) 0,4

Reason: the lewis structure is the one that uses points, and that usually uses the octect rule, so it is zero non bonding and 4 bonding, because the structure.

Question 9)

Answer : option B) Trigonal Bipyramidal polar.

Reason : . this molecule is polar due to the presence of the lone pair in the plane of the central atom.The lone pair also leads to the creation of a strong dipole moment.

Question 10)

Answer : option B) 3

Reason : Because of its structure

Question 11)

Answer : option D) +1

Reason: it has to be that, because its nitrate (NO3) and the charges on nitrogen are all odd numbers (usually)

Question 12)

Answer : option C) 2,4

Question 13)

Answer :option C) NCl3

Reason :NCl3 is polar, the other have structures were the dipolar momentum of every bond cancels each other

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