the first, second,third, and fourth ionization energies of element y are 740,1500 7700 10500 what group is it

Answer 1

Look at the huge gap between 2nd and 3rd. This is caused by going into a new level. Group 2, therefore.

Answer 2

If the first ionization energy is really low, the element is probably in group lA where all atoms are eager to lose their one lone electron, leaving an octet showing in outer level. If the second ionization energy is super high, you know you have cracked into a stable octet of electrons and are still working with group lA If the first ionization energy is middle ground, second Ie is a little higher, and the third Ie is super high, you must be dealing with a group IIA element, lst removing one, then two electrons fairly easily, then cracking into a stable octet below. Ans so forth.