Describe the general trends in ionization energies down a group and across a period.

As we go down a group  the valence electrons are less strongly attracted  by the nucleus of the atom due to the shielding effect of the inner electrons. Therefore the ionization energies decrease down a group.

As we go across a group the positive charge in the nucleus increases as the number of protons in the nucleus increases ,and the attractive force on the valence electrons increases, so the ionization energies also  increase.

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

its first and third is your answer i did the qustion the fourth isnt right