Line Spectra - Bohr's Model Flashcards
upon heating of elements, where does the color effect based on?
AND what spectrum is it based on?
color depends on MOST INTENSE LINES emitted from the 4 CHARACTERISTIC LINES
Line/Emission Spectrum
Continuous Spectrum vs Line/Emission Spectrum
Continuous Spectrum - all colors are showed
Line Spectrum - 4 characteristics line are showed
where is LINE SPECTRUM based on
wavelength
how does LINE SPECTRUM prove that visible light has DEFINIT ENERGY VALUES?
if light has an INFINITE ENERGY VALUE, it can emit ANY color which is not the case
Who created the Bohr’s model
Niels Bohr
What does the Bohr’s model say?
electrons moves around the nucleus in circular orbits in a certain allowed radius
relationship between energy of orbit and distance of electrons (n)
direct
kasi as electrons advance to excited state, nagiging positively charged ang nucleus
2 states that an electron can have during process of decay
ground state
excited state
what do you call the PROCESS wherein the electron goes back to its stable state and releases PHOTONS
process of decay
what do you call the PROCESS wherein e- advances to the excited state due to energy absoroption
ionization
Energy level postulate formula
Delta E of e- = Rh [( 1/initial n^2 ) - (1/final n^2)]
can energy of photon be negative?
no
formula for rydberg’s constant
- Rh (NEGATIVE) = Energy of electron x n^2
Rh = 2.179x 10^-18 J
can n (number of orbit) be negative or decimal?
no
Who suggested that particles have wave-like manner and what equation was thus derived?
+ wave-particle duality
Louis de Broglie
de Broglie Relation:
wavelength = (Planck’s constant) / mass (kg) x speed
Who made the UNCERTAINTY PRINCIPLE and what does it say?
- movement of e-
- 2 factors
- defines…?
Werner Heinsberg
- 3d movement around the nucleus
- position (uncertain velocity) & velocity (uncertain position) cannot be known, ONLY the probability
- INHERENT QUALITIES of electrons which defines them as being both PARTICLE and WAVES
What model DEFIES the UNCERTAINTY PRINCIPLE and why?
Bohr’s model - states the position and velocity of electrons but it still
PREDICTS THE MOST PROBABLE RADIUS OF ELECTRONS
After uncertainty principle, who developed a new equation to locate e-?
- name of creator
- name of equation
- relationship with wave intensity
- the 3 variables that the equation uses
Erwin Schrodinger
Wave function
direct
X,Y,Z
SERIES names for nf =
1
2
3
4
5
1 = Lyman (UV)
2 = Balmer (visible)
3 = Paschen
4 = Brackett
5 = Pfund
ENERGY LEVEL POSTULATE (definition of the ff)
nf > ni
ni > nf
+ ΔE absorption
- ΔE release
