that's an interesting question!
Well it's quite simple!
The moon does attract the earth but with a force much weaker than that of earth's. Thus the earth does not move towards the moon.! You can put it like this:
we know that the Earth has a larger mass than the Moon.
Now, mass is inversely proportional to the rate of acceleration of the Moon. So, the rate of acceleration of the Earth is comparatively lesser than that of the Moon towards the Earth.
So, that is why the Earth doesn't move towards the moon!!
Hope that clears your doubt sis?!
Please mark as Brainliestt!
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.
don't post question again and