When Na+ ions loses an electron, this stable configuration of Ne is broken. This requires high amount of energy. Hence, second ionization energy of sodium is largest.
What is the trend for second ionization energy?
Second ionization energy decreases as you go down the group. Third ionization energy decreases as you go down the group. For each element in the Group, the first ionization energy is less than the second ionization energy which is less than the third ionization energy.
Which of the following has highest 2nd ionization potential?
Thus, second ionization energy of sodium is extremely high.
Which has the larger second ionization energy lithium or beryllium?
Answer: Beryllium (Group II) has an extra electron and proton compared with lithium. The extra electron goes into the same 2s orbital. The increase in ionisation energy (I.E.)
Does calcium or barium have a greater ionization energy?
Barium has more electrons shells than calcium, so the nuclear shielding is stronger, and the outmost electrons are further away from the nucleus.
Does Li have a higher ionization energy than be?
The 2s electron is also further away from the nucleus. It is held less strongly and needs less energy for removal. The value for Beryllium is higher than for Lithium due to the increased nuclear charge.
