Why is Al3+ smaller than Na+?
Al3+ because they all have the same number of electrons, however Al3+ has the most protons and therefore greatest nuclear charge. In Al3+, the same number of electrons are being attracted by more protons in the nucleus, so the electrons are being pulled closer to the nucleus, reducing the size of the ionic radius.
Why is Li+ bigger than Mg2+?
Interestingly, the atomic radii of Li and Mg are 1.52 and 1.60 A respectively, and here also the difference is quite small. Despite the Mg atom having a slightly larger size, the Mg2+ ion is marginally smaller in size than the Li+ ion because of its higher nuclear charge.
Which is smaller Na or Na+?
The total number of electrons is 10 in case of Na+ and 11 in case of Na, while the number of proton is same i.e. 11 in both case.
Which one has more size Na or Na+?
Na+ is smaller than Na because, it has given away one electron because of which the electron shielding gets stronger due to more protons and less electrons. Whereas, Cl- is larger than Cl because it has gained an extra electron and so, the no.
Why is CL larger than Na+?
Na atoms are larger than Cl atoms because the electron cloud of Cl is pulled in more tightly by the increased number of protons in the nucleus. Na+ ions are smaller than Cl- ions because the Na+ ions have electrons in only two energy levels and Cl- ions have electrons in three levels.
Which pair has largest size difference?
Rb,Cs.
Which is larger F or F?
F has a smaller radius than F− because an additional electron causes greater repulsion in F− . F has a larger radius than F− because an additional electron causes greater repulsion in F. c. F has a smaller radius than F− because F− has an additional energy shell.
Why is O bigger than F?
1 Answer. In O− 7 outer electrons are tied to nuclei with 6 positive charges (number 8 minus 2 electons of inner shell), while in F− 8 outer electrons are tied to nuclei with 7 charges. The difference, however, should be quite small.
Is O bigger than O2?
O2− is larger than O because the increase in electron repulsions that accompany addition of an electron causes the electron cloud to expand. O2− is larger than O because O is neutral but O2− has a charge 2−.
Is N3 bigger than O2?
N3- is bigger than O2-, but it also has more charge.
Why is N3 larger than 02?
(a) Potassium has a lower first-ionization energy than lithium. (b) The ionic radius of N3- is larger than that of O2-. Even though both ions are isoelectronic, there is a greater nuclear positive charge in the oxide ion causing its electrons to be more tightly pulled toward the nucleus.
Why is N3 smaller than O2?
b] Both have the same number of electrons. However, O2- has 8 protons and N3- only has 7. The pull of the electrons by the protons in the nucleus is stronger in O2- because there are more of them, so the ion is pulled tighter and smaller.
How is f smaller than O2?
F-ion is smaller when compared with O2-ion because of the larger nucleus charge of the F-ion. This is because of the presence of more protons in F-ion that pulls the electrons on the shell’s outside, thus making it smaller.
Which of the following is smaller in size N3 O2?
Hence Na+ will be the smallest among others.
What is common among N3 Al3+ O2 Mg2+?
Therefore, in all the given ions it is common that all of them have 10 electrons. (b) It is known that more is the positive charge on an ion smaller will be its ionic radii. Whereas more is the negative charge on an ion more will be its ionic radii.
Which ion has the largest radius?
francium