Great job! You are almost done with this module. Let’s summarize wh...
Great job! You are almost done with this module. Let’s summarize what you
have learned from the lesson and activities by choosing the correct word inside the
parenthesis. Choose and write your answers on a separate sheet of paper.
1. volume 2.gas 3. solids 4.solids 5-6. little, ignore 7-8. large, big 9. straight 10. kinetic energy
to reach the second ionization potential we remove a second electron from an already ionized element
here are the electron configurations for the singly charged ions in your question, along with their second ionization potentials (kj/mol)
li+1be+1b+11s2 1s2 2s1 1s2 2s2 7297 1757 2426
we see that both li+1 and b+1 have completely filled shells, the stable "inert gas" configuration. we would expect it to be difficult to remove one electron from these two ions and destroy stable configuration. further, we would expect removal of one electron from li+1 to be more difficult than from b+1 because in the former case we are removing a 1s electron is closer to the nucleus than the 2s electron in the case of b+1. on the other hand, if be+1 loses one electron it will have a 1s2 electron configuration and a stable "inert gas" configuration. should make it much easier to remove one electron from be+1 than from the other two ions.
length of train = 500 metre
speed of train = 15 metre per second in east direction
speed of bird = 10 metre per second in west direction