Two sets of ionizations are shown in the tables below. Complete the tables by ordering each set of ionizations by increasing amount of energy required.In other words, for each set choose "1" next to the ionization that would require the least energy, "2" next to the ionization that would require the next least energy, and so on.ionization energy required ionization energy required→Sr+Sr+e− →He+He+e− →He+He+e− →Ca+Ca+e− →Mg+Mg+e− →Fr+Fr+e−

The second ionisation potential of an element M is the energy required to:a.Remove 2 moles of electrons from one mole of gaseous atomsb.Remove one mole of electron from one mole of gaseous anionc.Remove one mole of electron from one mole of gaseous cation of the elementd.Remove one mole of electron from one mole of monovalent gaseous cation of the element

Which order of ionization energy is correctans.

Choose and then fill in the blank with the element that has the higher first ionization energyCa or Sr

For each pair of elements, choose and then fill in the blank with the element that has the higher first ionization energyO or Ne

Out of N, O, Ne, Na, Na+, select the species which have maximum and minimum ionization energy respectively.Na+, NaNe, NaNa+, ONe, N