Stuff I should have known Flashcards
what is isoelectronic?
Having the same number of electrons or the same electron configuration
What is deuterium?
An isotope of hydrogen
In effecting nuclear charges by bombarding target nuclei with positively charged alpha particles, it is necessary to accelerate these particles to high speed because it is necessary to…
Overcome the force of repulsion of the nucleus
What significant information about atomic structure came from the Millikan experiment using charged oil drops?
The magnitude of the charge of an electron
The existence of discrete/quantized energy levels in an atom may be inferred from…
atomic line spectra
What emission line occurs at the highest frequency?
The lowest drop… ie 3 to 1
When an atom of an electropositive atom becomes an ion, it…
“Does none of these”
What is different between sigma bonds and hybridization?
Sigma bonding occurs between already hybridized atoms… two hybrid bonds crossing. Hybridization is the initial formation of the hybrid orbital
An octehedral atom with 2 isometric forms indicates ____ geometry
Square planar
What effects the vapor pressure of a liquid?
The temperature
A gas or vapor may only be liquified only at temperatures…
at or below the critical temperature
What is the number of nearest-neighbors in a body-centered cubic lattice?
8
What is enthalpy?
The total energy in a system
When is the calculation reactants-products?
Bond energies or enthalpies of combustion
When is a reaction more exothermic?
When its delta H0 is more negative
What is the photoelectric effect formula?
KE=hf-hf(threshold)
Simple Cubic edge
2r
Body-centered edge
4r/sqrt(3)
Face-centered cubic edge
2sqrt(2)r
What is the distance between layers?
n(given)wavelength/2sin(theta)
What does a steeper incline mean?
More endothermic
What is the pressure of a solution?
It’s vapor pressure time the mole fraction
What is the vapor pressure lowering of a solution?
The regular pressure minus the vapor pressure
What is the change in freezing/boiling point?
molalityXvan’t hoff factorXKf
