Which is bigger mg 2 or O 2?

mg2+ ion is smaller than o2- ion although they have the same electronic structure.

Why is Mg 2 smaller than its corresponding atom?

This is because Magnesium has greater number of protons as compared to Oxygen and hence greater effective nuclear charge and larger force of attraction with the valence electrons, resulting in the shrinking of the atomic size.

Why is Mg 2 smaller than na1?

The higher positive charge on the nucleus in magnesium causes a stronger attraction on the negatively charged electrons ($$F \propto q_1 q_2$$), and so the ion has a smaller ionic radius.

Why is oxide ion larger than magnesium ion?

Mg2+ and O2- ions are isoelectronic (they have the same number of electrons). However, magnesium has a greater number of protons than oxygen, and hence greater effective nuclear charge and larger force of attraction with the valence electrons.

Which of the following ion is larger than O 2 ion?

O2- will have larger atomic size. O2- has 10 electrons and 8 protons, while Mg+ has 10 electrons and 12 protons. As in Mg+ number of protons is more that compared to O2- the attraction force between the nucleus and the electrons will increase and the atom of Mg2+ will get shrink and hence has smaller atomic size.

How does Mg differ from Mg 2?

Mg differs from Mg2+ because Mg is an element/atom whereas Mg2+ is a charged ion. The latter representation is used when there is an ion of Mg present in the reaction.

Does Mg or Mg 2 have a larger atomic radius?

The key difference between the ions that causes the Mg2+ to have a smaller atomic radii, is that it has more protons within its nucleus, hence a greater nuclear charge than Na+ which means it will attract the valence electrons on the ion to a greater degree, shortening the distance between the nucleus and valence …

Why do you think the Na +ion is smaller than a neutral Na atom?

Na+ is smaller than Na atom because: Sodium is a Group 1 element, so its only ionic state is Na+. Cations of a given element have a smaller radius than the neutral atom so that Na+ will decrease in size compared with the Na atom. Sodium atoms and sodium ions have the same number of protons.

Is mg2+ or Na+ smaller?

Magnesium has one more proton than sodium, and therefore, with the same number of electrons and 1s orbital shielding, the Zeff for magnesium is greater, and therefore Mg2+ has the smaller ionic radius.

Which has larger size Mg or Na?

Therefore,Sodium has larger atomic size than magnesium. The atomic number of Mg is 12 and atomic number of Na is 11.