The lewis structure of pf3 shows that the central phosphorus atom has ________ nonbonding and ________ bonding electron pair(s)
2 answers:
Answer : The Lewis structure of shows that the central phosphorus atom has 1 non-bonding and 3 bonding electron pair(s).
Explanation :
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
The number of valence electrons are shown by 'dot'.
The given molecule is, phosphorous trifluoride.
As we know that phosphorous has '5' valence electrons and fluorine has '7' valence electrons.
Therefore, the total number of valence electrons in phosphorous trifluoride, = 5 + 3(7) = 26
According to electron-dot structure, there are 6 number of bonding electrons and 20 number of non-bonding electrons.
The Lewis structure of shows that the central phosphorus atom has 1 non-bonding and 3 bonding electron pair(s).
The Lewis-dot structure of is shown below.
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Explanation:Since the compound X has no net-dipole moment so we can ascertain that this compound is not associated with any polarity.
hence the compound must be overall non-polar. The net dipole moment of compound is zero means that the vector sum of individual dipoles are zero and hence the two individual bond dipoles associated with C-Cl bond must be oriented in the opposite directions with respect to each other.]
So we can propose that compound X must be trans alkene as only in trans compounds the individual bond dipoles cancel each other.
If one isomer of the alkene is trans then the other two isomers may be cis .
Since the two alkenes give the same molecular formula on hydrogenation which means they are quite similar and only slightly different.
The two possibility of cis structures are possible:
in the first way it is possible the one carbon has two chlorine substituents and the carbon has two hydrogens.
Or the other way could be that two chlorine atoms are present on the two carbon atoms in cis manner that is on the same side and two hydrogens are also present on the different carbon atoms in the same manner.
Kindly refer the attachments for the structure of compounds:
