Why the 1st ionization energy of Na is greter than mg?

Answer 1

Because Be contains more protons and thus has greater nuclear positivity which exerts a stronger attraction for its electrons which requires more energy to remove one of the electrons leading to a higher ionization potential.

Answer 2

Helium has the highest ionization energy, not hydrogen. Helium's ionization energy is due to the fact that it is a noble gas, containing 2 electrons in its first and only energy level, and they are held tightly by the nucleus, so it would take a large amount of energy to remove an electron from a helium atom. Refer to the related links for an illustration of ionization energies.

Answer 3

The first ionization energy of Na is smaller than that of Mg. However, the second ionization energy of Na is larger than that of Mg.

This is because the second ionization energy of metal M is the energy needed to to remove an electron from M+ to form M2+ . In the case of Na, Na+ is already a stable species. To take an electron away from Na+ , the electron has to be taken from one of the inner shells, where the electrostatic force from the nucleus is stronger, and thus it's more difficult. However, in the case of Mg, Mg2+ is the more stable species than Mg+ . Therefore, it takes less energy to remove one electron from Mg+ is easier than from Na+ .

Answer 4

The radius of the nucleus of Lithium is smaller because it has 1 less proton and 1 less neutron.

The overall radius of Lithium is larger due to it's 2s1 electron being in the outer most valence shell, and the inner electrons of the 1s shell shielding against the positive charge of the nucleus.

Answer 5

This is because after Li undergoes on ionization (loses one electron) it then has a noble gas-like electron configuration and is very stable. Be would need to lose 2 electrons in order to obtain a noble-gas electron configuration.

Answer 6

ionization energy of lithum is greater than sodium.Reason is that atomic size of lithum is smaller than sodium.so,in lithum attraction of nucleus is greater on electrons in valance shell than nucleus of sodium.In other words electrons are more tightly bound by nucleus in lithum than in sodium.so,more energy is required to remove electron from lithum than sodium and amount of energy required to remove electron is ionization energy.

Answer 7

The first ionization energy of sodium (Na) is greater than magnesium (Mg) because sodium has a smaller atomic radius and a lower effective nuclear charge compared to magnesium, making it easier to remove an electron from sodium. The electron being removed from sodium is closer to the nucleus and is thus more strongly attracted, requiring more energy to remove.

Answer 8

Simple answer: Because it is a smaller size, it take more energy to remove an electron.

Answer 9

due to increase in atomic number,the ionization energy decreases within a group. therefore hydrogen has grater ionization energy than lithium.