Choose two of the qeustions and answer them with details please. List the possib

Question

Choose two of the qeustions and answer them with details please.
List the possible subshells for the n = 6 shell. List the possible subshells for the n = 7 shell. 7.89 7.90 7.91 What are gamma rays? How does the gamma radiation of foods improve their shelf life? 7.92 How can gamma rays that are used in food irradiation be produced? Does such irradiated food show any radioactivity? 7.93 The word laser is an acronym meaning light amplification by stimulated emission of radiation. What is the stimulated emission of radiation? 7.94 Explain how lasers are used to "read" a compact disc. 7.95 Explain the concept of quantum mechanical tunneling. 7.96 Explain how the probe in a scanning tunneling microscope scans a sample on the surface of a metal.

Explanation / Answer

7.89) If n=6, l=0 t0( 6-1) , i.e (0,1,2,3,4,5)

where l represents the number of sub shells. So in this case we have 6 sub shells.

l=0 => s sub shell

l=1 => p sub shell

l=2 => d sub shell

l=3 => f sub shell

l=4 => g sub shell

l=5 => h sub shell.

7.90) If n=6, l=0 t0( 7-1) , i.e (0,1,2,3,4,5,6)

where l represents the number of sub shells. So in this case we have 7 sub shells.

l=0 => s sub shell

l=1 => p sub shell

l=2 => d sub shell

l=3 => f sub shell

l=4 => g sub shell

l=5 => h sub shell

l=6 => i sub shell.

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