Which ion has the smallest ionic radius?
Because K + has the greatest nuclear charge (Z = 19), its radius is smallest, and S 2− with Z = 16 has the largest radius.
Which of the following ions has the smallest radius?
Explanation: The ion that has the smallest atomic radius is . This is because fluoride is the most electronegative element, which means that electrons are more attracted to the nucleus.
Which element has the largest ionic radius?
1 Answer. Ernest Z. K+ has the largest radius.
How do you determine the largest ionic radius?
The ionic radius of the elements exhibits trends in the periodic table. In general: Ionic radius increases as you move from top to bottom on the periodic table. Ionic radius decreases as you move across the periodic table, from left to right.
Which is the smallest radius?
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
Which has smallest radius?
Hence, Cl has the smallest radius.
Which ion has the smallest radius quizlet?
S2-, K+, and Ca2+ all have 18 electrons. Which ion would you expect to have the smallest ionic radius? Ca2+ would have the smallest ionic radius because Calcium has a positive charge, and because this ion is a cation, cations will have the smallest radius.
Why is K bigger than Br?
Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.
Which ion is the smallest?
More the nuclear charge on ion, electrons are more strongly attracted and thus size decreases. Hence, among the given ions Al3+ is the smallest ion. An ion is a charged atom or molecule.
What is the radius of Mg2+?
As the ionic radii of Mg2+ (0.65 A), Cu2+ (0.73 A) and Ni2+ (0.72 A) are appreciably smaller than Ca2+ (0.99 A), it appears that the Mn2+ binding site is more accessible to Mg2+, Cu2+, and Ni2+ as compared to Ca2+, the ionic radius of Mn2+ being 0.80 A.
What is the difference between atomic and ionic radius?
Atomic and ionic radii are distances away from the nucleus or central atom that have different periodic trends. Atomic is the distance away from the nucleus. Atomic radius increases going from top to bottom and decreases going across the periodic table. Ionic radius is the distance away from the central atom.
What is the ionic radius of Na+?
227 pm