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Which of these elements has the highest first ionization energy Si or C?

Carbon (C) has a higher first ionization energy than silicon (Si). This is because as you move across a period in the periodic table, the first ionization energy generally increases due to increasing nuclear charge pulling electrons closer. Silicon is positioned to the right of carbon in the same period, resulting in a lower first ionization energy compared to carbon.


Which element in the second period has the greatest ionization energy?

Neon


Does calcium have a lower first ionization energy level than sodium?

No. Calcium has TWO valence electrons, and Sodium has ONE. It is lot easier to take off one, than two you see. However, the second ionization energy of calcium IS however than the second ionization energy of Sodium. ;)


An atom has a first ionization energy of 496 kJmol and a second ionization energy of 4560 kJmol What group of the periodic table would the atom be in?

The significant jump in ionization energy from the first to the second indicates the removal of an electron from a filled energy level. This suggests the atom is in the second group of the periodic table, since elements in this group have a filled outer s sublevel before starting to fill the p sublevel in the subsequent period.


What is the difference between 1st 2nd 3rd ionization energies?

The second ionization energy is always greater than the first because once you have pulled off the first electron, you are now trying to remove the second electron from a positively charge ion. Because of the electrostatic attraction between + and -, it is more difficult to pull an electron away from a positively charge ion than a neutral atom.

Related Questions

Why is second ionization energy of group 1 elements is higher than g2 elements?

The second ionization energy of group 1 elements is higher than that of group 2 elements because, after the removal of the first electron, group 1 elements achieve a stable noble gas configuration, resulting in a stronger effective nuclear charge acting on the remaining electrons. In contrast, group 2 elements, which have two valence electrons, experience less increase in nuclear charge after the first ionization since they still have one more electron in the outer shell, making it easier to remove the second electron. Consequently, the increased stability in group 1 elements post-first ionization leads to a higher energy requirement for the second ionization compared to group 2.


Which is greater the second ionization energy of potassium or that of calcium?

The second ionization energy of calcium is greater than that of potassium. This is because calcium, with its higher nuclear charge and smaller atomic size compared to potassium, holds onto its electrons more tightly.


Which of these elements has the highest first ionization energy Si or C?

Carbon (C) has a higher first ionization energy than silicon (Si). This is because as you move across a period in the periodic table, the first ionization energy generally increases due to increasing nuclear charge pulling electrons closer. Silicon is positioned to the right of carbon in the same period, resulting in a lower first ionization energy compared to carbon.


Where is the Main group atom would be expected to have the lowest second ionization energy?

The main group atom expected to have the lowest second ionization energy is typically found in Group 1 (alkali metals), particularly lithium (Li) or sodium (Na). This is because, after the removal of the first electron, these elements achieve a stable noble gas electron configuration, making it significantly easier to remove the second electron compared to other main group elements. The low effective nuclear charge felt by the remaining electrons in these atoms also contributes to their lower second ionization energy.


Why does the second ionization energy of Group 1 Elements greater than the first ionization energy of Group 1 Elements?

The second ionization energy of Group 1 elements is greater because after losing one electron, the remaining electron is held more tightly by the nucleus due to the higher effective nuclear charge, making it more difficult to remove. In contrast, the first ionization energy is lower because the outer electron is farther from the nucleus and experiences less attraction.


What element has the largest first ionization energy Sb Se Cl or Pb?

Chlorine (Cl) has the largest first ionization energy among the elements listed (Sb, Se, Cl, and Pb). Ionization energy tends to increase across a period and decrease down a group in the periodic table. Since Cl is located in the second period and is further right compared to the others, it has a higher ionization energy than antimony (Sb), selenium (Se), and lead (Pb).


Which element in the second period has the greatest ionization energy?

Neon


What is the energy needed to remove electrons from an atom called?

ionization potential energy. but remember the atom must be neutral .


What is the differences between first and second ionization energy?

The first ionization energy is the energy that is required in order to remove the first electron from an atom in the GAS phase, the second ionization energy is the energy required to remove the second electron from an atom in the GAS phase. Ionization energy will generally increase for every electron that is removed and increases from left to right in the periodic table and moving up the periods.


Why does neon have a higher second ionization energy than fluorine?

Neon has a higher second ionization energy than fluorine because its first ionization energy removes an electron from a stable noble gas configuration, resulting in a very stable ion. In contrast, fluorine's second ionization energy involves removing an electron from a more unstable anion (F⁻), which is easier than removing a second electron from neon's filled outer shell. Additionally, the effective nuclear charge experienced by the remaining electrons in neon is higher, making it more difficult to remove the second electron compared to fluorine.


Does calcium have a lower first ionization energy level than sodium?

No. Calcium has TWO valence electrons, and Sodium has ONE. It is lot easier to take off one, than two you see. However, the second ionization energy of calcium IS however than the second ionization energy of Sodium. ;)


An atom has a first ionization energy of 496 kJmol and a second ionization energy of 4560 kJmol What group of the periodic table would the atom be in?

The significant jump in ionization energy from the first to the second indicates the removal of an electron from a filled energy level. This suggests the atom is in the second group of the periodic table, since elements in this group have a filled outer s sublevel before starting to fill the p sublevel in the subsequent period.