And the greatest ionization energy would be for oxygen. Therefore, the least organizations ruby sodium followed my magnesium, followed by phosphorus. Um, due to the increased nuclear charge, ionization energy increases going from left to right and ionization energy increases going from bottom up to top. Lets use these trends to try and figure out which atom would have the largest radius. Atomic size decreases when going from left to right across a period Atomic size increases when going from top to bottom down a group. Yeah, yeah, as the electrons in oxygen, our closest to the nucleus, and therefore would have a greater attraction for the positive charge located in the nucleus for C uh, in order of increasing ionization energy, you know that ionization energy increases to write in order. For neutral atoms, the periodic trends in atomic size can be described like this. So oxygen has the highest negative electronic affinity? Sure, because the nuclear attraction okay, yeah, in oxygen is greater than the other elements. Out of these oxygen would be the smallest, followed by phosphorus, which has the greatest nuclear charge, followed by magnesium, followed by sodium would be the largest out of the for elements for B, which has the most negative electron affinity. The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus. Therefore, since O is located to the left of F in the same period on the periodic table, we can predict that O will have a larger atomic radius than F. There are several other ways ways to define radius for atoms and ions. It must be noted, atoms lack a well-defined outer boundary. It is not always easy to make sensible comparisons between the elements however as some bonds are quite short because of multiple bonding (for instance the OO distance in O 2 is short because of the the double bond connecting the two atoms. When one or more electrons is removed from a neutral atom, two things happen: (1. The atomic radius of Oxygen atom is 66pm (covalent radius). So, in order of increasing atomic radius, we're going to go from the smallest to largest mhm. A comparison of ionic radii with atomic radii (Figure 7.9 'Ionic Radii (in Picometers) of the Most Common Oxidation States of the ') shows that a cation is always smaller than its parent neutral atom, and an anion is always larger than the parent neutral atom. Neon three s one, neon 32 to do helium two s 22 p four. Oxygen has eight electrons and prosperous would have 15 electrons looking at their electron configuration. When a result, as one moves along a group, the atomic radius grows. As a result, the attraction between the nucleus and the valence electron weakens. ![]() Uh, if we look at the number of electrons, this is 11 electrons. Furthermore, as we advance down the group, the valence electrons are present in a higher shell, increasing the distance of the valence electrons from the nucleus. Well, let's consider the elements sodium, magnesium, oxygen and phosphorus, the elements sodium, magnesium, oxygen and phosphorus.
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