Helium has the highest ionization energy.
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).
Chlorine, Cl. Elements with the most ionization energy are located at the top right corner of the periodic table. As you travel down a period the ionization energy increases, whereas travelling down a group the ionization energy decreases.
The ionization energy increase from sodium to fluorine.
Chlorine is Cl, C is carbon. The first ionization energy of magnesium is less than that of chlorine.
Helium has the highest ionization energy.
The element with the largest first ionization energy is (a) Sb (antimony). It has the highest first ionization energy among the elements listed.
Chlorine, Cl. Elements with the most ionization energy are located at the top right corner of the periodic table. As you travel down a period the ionization energy increases, whereas travelling down a group the ionization energy decreases.
The ionization energy increase from sodium to fluorine.
The element with a higher first ionization energy than chlorine Cl is fluorine F. Fluorine is located to the left of chlorine in the periodic table, which means it has a smaller atomic radius and stronger nuclear attraction, requiring more energy to remove an electron.
Chlorine is Cl, C is carbon. The first ionization energy of magnesium is less than that of chlorine.
Elements in the top right corner of the periodic table tend to have the largest first ionization energies. This includes elements such as helium, neon, and fluorine. They have a strong attraction for their valence electrons due to their small atomic size and high effective nuclear charge.
Cl
The order from highest to lowest ionization energy is Cl > Al > Si > Na > S. This is because ionization energy generally increases from left to right and from bottom to top in the periodic table.
As we move from left to right across Period 3 from Na to Cl, electronegativity and first ionization energy generally increase. This is due to the increasing effective nuclear charge as electrons are added, causing a stronger attraction between the nucleus and outer electrons. Chlorine, being closer to the right of the period, has a higher electronegativity and first ionization energy compared to sodium.
I'm assuming you're referring to the problem Na(g)+Cl(g) -> Na+(g)+Cl-(g)Since, ionization energy is basically the amount of energy it takes to dislodge one electron from a neutral atom, Cl has to dislodge one electron to stabilize NaThus,Na -> Na++e-
The ionization energy of a mono-anion such as Cl- is the amount of energy required to remove an electron from the anion to form a neutral atom. Electron affinity is the energy released when an atom gains an electron to form an anion. They are related as the ionization energy of Cl- is equal in magnitude but opposite in sign to the electron affinity of the Cl atom.