1. List the types of electromagnetic radiation in order from smallest to highest wavelength:
____gamma______ __Xrays_____ _____ultraviolet__________ __vivible__________
____infrared___________ _____microwaves__________ ____radio waves_______
When placed in the above order, is the frequency increasing or decreasing? _decreasing___
When placed in the above order, is the energy increasing or decreasing?_decreasing ______
Energy and frequency are _______directly_____ proportional
Frequency and wavelength are _________inversely_____ proportional
Energy and wavelength are _______inversely_________ proportional
Problems:
1. How many grams of aluminum are in 7.55 moles of aluminum?
X g Al= 7.55 moles Al x 26.98 g Al = 204 grams Al
1 mole
1. How many atoms of lead are 85.5 grams of lead?
x atoms Pb = 85.5 g Pb x 6.022 x 1023 atoms = 2.48 x 1023 atoms
207.2 grams
3. You are accidentally exposed to electromagnetic radiation with a wavelength of 535 nm.
a. What is the frequency of this radiation?
Frequency = c/wavelength (in meters) = 3.0x 108 / 5.35 x 10-7 m = 5.61 x 1014 Hz
b. What is the energy of this radiation
E = hx frequency 6.626 x 10-34 x
5.61 x 1014= 3.72 x 10-19 J
4. Write the orbital notation for silicon:
____________________________________________________________
5. Write the electron configuration notation for antimony:
__1s2 2s22p63s23p64s23d104p65s24d105p3_________________________________
6. Write the shorthand notation for mercury:
___________[Xe]6s24f145d10_____________________________________