HW 2 - CHE-105 Chapter 2 Homework Name _ Kyle Alvis_ 1....

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Chapter 2 Homework Name ____ Kyle Alvis ____ 1. Examine Figure 2.7 - 1.1 Which type of electromagnetic radiation has the highest energy? ____ A 1.2 Which has the longest wave length? ____ F 1.3 Which has a frequency just lower than UV? ____ D a. gamma rays c. UV rays e. IR rays b. x-rays d. visible rays f. microwave rays 2. How many valence electrons does each atom have? 2.1 Ca ___ 2 2.2 Mg ___ 2 2.3 Li ___ 1 2.4 P ___ 5 2.5 O ___ 6 3. Which subatomic particle 3.1 is least massive? ___ Electron 3.2 is uncharged? ___ Neutron 3.3 is negatively charged? ___ Electron 3.4 is positively charged? ___ Proton 4. (Indicate all that apply) The element, oxygen - 18 (i.e. O 18 8 ) a. is an allotrope of oxygen that contains 18 oxygen atoms b. is an isotope of oxygen c. has 10 neutrons d. has 18 neutrons e. has 8 protons f. has 8 neutrons 5. ( Indicate all that apply ) All neutral atoms of the same element have a. the same mass number b. the same number of protons c. the same number of neutrons
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This note was uploaded on 02/05/2009 for the course SCI CHEM taught by Professor Brinkman during the Spring '09 term at Indiana Wesleyan.

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HW 2 - CHE-105 Chapter 2 Homework Name _ Kyle Alvis_ 1....

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