Because K + has the greatest nuclear charge (Z = 19), its radius is smallest, and S 2− with Z = 16 has the largest radius.
Which ion has a largest radius?
1 Answer. Ernest Z. K+ has the largest radius.
Which has largest radius?
Since the atomic radius decreases in a period but increases down the group so Sr of group II and period V is largest in size.
Which has the largest radius O or O 2?
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−. … S2− is larger than O2− because for particles with like charges, size increases going down a family.
Which has the largest radius Co3+ Mn3+ fe3+ Cr3+?
Fe 3+ has highest radii because by going left to right in the periodic table , the size get decreased so .. Fe 3+ >Co3+ >Cr3+ >Mn3+ .
Which has larger radius mg or CA?
1 Expert Answer
Calcium has a larger atomic radius than Magnesium. If you look on the period table you will notice Magnesium atomic number is 12, while Calcium is 20. Calcium(Ca) has 4 energy level while magnesium(Mg) has 3 Energy level.
Which one has larger radius Na+ f/f na?
Explanation: The ionic radius of fluoride ion is bigger then that its parent atom. This is because when fluorine atom gains an electron number of electrons becomes more than the number of protons due to which effective nuclear charge on valence electrons decreases and resulting in increase in size of an ion.
Which is bigger O 1 or O 2?
O+1 ion contains 7 electrons and 8 protons ,O contains 8 electrons and 8 protons ,O-1 ion contains 9 electrons and 8 protons and O-2 ion contains 10 electrons and 8 protons. So O-2 is biggest in size.
Which is larger in radius K+ or K?
These are electrons with “highest energy level”. When at neutral, the potassium ion in the form of K has an electronic configuration of: … The K+ ion has its outermost electrons on the third energy level now and is size is smaller than that of K ion. Hence, K is larger than K+.
Is K+ smaller than Ca2+?
ION RADIUS K+ smaller radius. … (d) K+ is larger than Ca2+ Isoelectronic; Ca2+ has more protons to pull e- inward.
Which is larger Cu+ or Cu2+?
Cu+ is larger than Cu2+. Cu2+ has a smaller cationic radius due to stronger hold of the nucleus on the remaining 27 electrons after the loss of two as compared to Cu+ where only one electron is lost and the hold of nucleus is less.
Which ion is larger Ca2+ or Mg2+?
Cations are smaller than their parent atoms, and so the Ca2+ ion is smaller than the Ca atom. Because Ca is below Mg in group 2A of the periodic table, Ca2+ is larger than Mg2+. Consequently, Ca > Ca2+ > Mg2+.
Why is Fe2+ bigger than Fe3+?
Fe2+ will be larger than Fe3+. This is because the outermost electron in the Fe2+ ion is pulled off to form Fe3+ ion. As the electrons are removed, it reduces the repulsion increasing nuclear charge experienced by each of the other d electrons and decreases the size of the ion.