what happens to the size of the associated ions: e.g. Nat --> Mg2+ --> Al3+?

Question

what happens to the size of the associated ions: e.g. Nat --> Mg2+ --> Al3+

Answer 1

All three of these ions have the same number of electrons, they are "isoelectronic." The size of the ions thus depends on the number of protons in the nucleus. As we move to the right across a row on the periodic table, the number of protons in the nucleus, and thus the nuclear charge, increases. This increase in nuclear charge pulls the electrons in tighter, thus reducing the size of the ions. Na+ > Mg2+ > Al3+

Answer 2

those ions are isoelectronic - they have a similar variety of electrons. although, as you bypass in the course of the periodic table, the variety of protons will develop. the technique of the nucleus to drag electrons in course of itself will develop, so the electrons are in course of the nucleus. This makes the atomic radii decrease contained in the order Na+>Mg2+>Al3+.

Answer 3

the size decreases accordingly