Kinetic Molecular Theory Flashcards
Does boron follow octet rule?
no
Why doesn’t boron follow octet rule?
doesn’t want to give up electrons
doesn’t want to look like a noble gas
happy with sharing electrons with hydrogen and having 6 electrons
Why are expanded octets allowed to exist?
elements in the third period and beyond on the periodic table have available d-orbitals in their valence shell, which can accommodate additional electrons beyond the typical eight, allowing them to form more bonds and exceed the octet rule
Why are expanded octets called expanded octets?
they go into 3d orbitals
Are reactivity and geometry connected?
yes
What does stable mean?
won’t react easily
What does unstable mean?
will react easily
What is the kinetic molecule theory?
kinetic energy is proportional to temperature
no attractive forces
negligible particle volume
constant random motion
perfectly elastic collision
What does it mean when kinetic energy is proportional to temperature?
if temp is doubled, KE is doubled
What do no attractive forces work well for?
works well for low pressure and high temperature
What does it mean when there is constant random motion?
motion/direction of molecules and their speed
What does it mean when there are perfectly elastic collisions?
energy is transferred, no KE is lost
When will molecules have the same KE?
when in thermal equilibrium
What happens if the molecular mass is different?
there is same average amount of KE
How is it possible to have the same average KE when molecular mass is different?
they have different speeds
the larger the mass, the slower to speed of the particle
