Which Of The Following Statements Are True? Select All That Apply. A. All other
ID: 580563 • Letter: W
Question
Which Of The Following Statements Are True? Select All That Apply.
A. All other factors being the same, dispersion forces between linear molecules are greater than dispersion forces between molecules whose shapes are nearly spherical. B. For the halogens, the dispersion forces increase while the boiling points decrease as you go down the column in the periodic table from F2 to I2 . C. For molecules with varying molecular weights, the dispersion forces may not become stronger as the molecules become more polarizable. D. The smaller the atom, the less polarizable it is. E. In terms of the total attractive forces for a given substance, dipole-dipole interactions, when present, are always larger than dispersion forces.Explanation / Answer
a.It is true as when rhe shape of the molecule is linear then the relative position of electron with respect to the nucleus of its atom can easily be saud whether it is left to it or right and charge distribution is also more and easy in case of linear molecule which makes forces of attraction stronger between them than in those between spherical ones..
b.it is true as while going diwn the group no. of electron increase due ti which there is also increment in the magnitude of charge distribution between electrons and nucleus and hence greater forces if attraction hence boiling point also increase..
c.if the molecule becomes more polarized then maginude of charge distribution increase and so the vanderwall forces of attraction...
d.it is false as when the size of a cation decrease then its polarisation power increase due to the fact that the dustance between its nucleus and free electrons of other atom or charged species close to this cation decrease so the power to pull those electrons increase..
e.it is true because dipole dipole interaction are permanent due to the permanent charge distribution between the atoms in a molecule due to electronegativity difference while london forces are temporarily which are due to the motion of electrons around the nucleus which behaves as negative pole and nucleus of the other atom as positive pole...
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.