ch3 - Electronic Structure and Periodic Properties of Elements

CHEM25

SPEED OF LIGHT

c= λν

C =

2.998×10⁸m/s

λ =

wavelength, m

v (pronounced “nu”)

frequency, Hz (hertz) or s^-1 (per second)

MHz to Hz

x10⁶

Nm to m

x10^-9

wavelength UP, frequency ____

DOWN

Energy Formula

E = hv or E= hc / λ (wavelength)

h (Plank’s constant) =

6.626 × 10^-34 J

ENDOTHERMIC

absorb light. increase energy

EXOTHERMIC

release light. decrease energy

Difference in Energy formula from n₁ to n₂

E₁-E₂

WAVELENGTH ( λ )

FREQUENCY ( v )

AMPLITUDE