Part A Which of the following statements are rue? Select all that apply ar the n
ID: 304200 • Letter: P
Question
Part A Which of the following statements are rue? Select all that apply ar the nobe gaes,the dapersion forces dcrease whethe boing points increase as you go down the column in the periodictable ? Al other tdors beng he same, d person forces between linear molecules are greater than dispersion forces between mol ates whose shapes ae neany s nenca in terms of the total atracive forces tor a given substanoe, dipole dpole intewractions, when present are always larger than dispersion forces The larger the atom, the more polarizable it is For molecules with similar molecular weights, the dspersion lorces become stronger as the molecules become more polarizableExplanation / Answer
FALSE --- THE DISPERSION FORCES INCREASES WITH INCREASE IN THE SIZE OF THE ATOM, SO DISPERSION FORCES INCREASES(NOT DECREASES) DOWN THE GROUP AND BOILING POINT INCREASE DOWN THE GROUP.
TRUE--- LINEAR MOLECULES WILL HAVE GREATER DISPERSION FORCES COMPARED TO MOLECULES WHICH ARE NEARLY SPHERICAL.
TRUE--- DIOLE- DIPOLE INTERACTIONS ARE GREATER FORCES.
DISPERSION FORCES ARE ALSO DIPOLE-DIPOLE INTERACTIONS BUT WEAKEST SINCE THEY ARE INDUCED DIPOLE INTERACTIONS.
TRUE--- THE LARGER THE ATOM THE MORE POLARIZABLE.( OUTER SHELL NEGATIVE CHARGE IS AWAY FROM NUCLEUS).
FALSE--- HIGHER THE POLARIZABILITY , OR POLARISING POWER HGHER THE STRONGER DISPERSION FORCE, BUT SIMILAR MOLECULAR WEIGHT CANNOT DECIDE THE DISPERSION STRENGTH. MOLECULES HAVING HIGHER MOLECULAR MASS MAY HAVE HIGHER DISPERSION FORCES.