Help for questions 1-12 on page 397:

Question #1:   Read page 364 - first paragraph. Then study figure 11.4 on page 362 to see what frequency is between Infrared and Radio waves.

Question #2:   Read page 373 last paragraph. Please note that each orbital holds 2 electrons. You can also look at figure 11.24 on page 382 and count the number of boxes in each orbital having a principal energy level of 3. Then multiply that number by 2 since each box holds two electrons.

Question #3:   Read the paragraphs inside the orange box at the top of page 385.

Question #4:   Read page 369 - last paragraph.

Question #5:   Read page 388 beginning with the heading: Ionization Energies.

Question #6:   Read the bottom of page 372.

Question #7:   Read the bottom of page 387.

Question #8:   Read page 388.

Question #9:   See figure 11.24 on page 382 and read pages 380-381 - especially the box at the bottom of page 381.

Question #10:  same as 9 above

Question #11:  page 373 beginning with the paragraph under the heading "Hydrogen Orbital". Boron can be excited in a similar way in which the hydrogen electron can be excited. The Boron's 2p electron can jump up to a 3s or to  a 3p orbital depending upon the amount of energy absorbed by the atom.

Question #12:  Read page 388.