Which element has a larger ionic radius?
francium
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 metal has the largest ionic radius?
Barium (symbol:Ba) is the group 2 or alkaline earth metal that has the largest atomic radius, equal to 222 pm.
Which has the largest ionic radius S2 Cl K+ Ca2+?
The correct option is : d S2-Explanation:Since all of these ions contain 18 electrons each so these are isoelectronic. For isoelectronic ions smaller the positive nuclear charge greater is the size of the ion.
How do you compare ionic radius?
A comparison of ionic radii with atomic radii (Figure 8.2. 7) shows that a cation, having lost an electron, is always smaller than its parent neutral atom, and an anion, having gained an electron, is always larger than the parent neutral atom….Ionic Radii and Isoelectronic Series.
| Ion | Radius (pm) | Atomic Number |
|---|---|---|
| Al3+ | 57 | 13 |
Is K or K+ larger?
The cation of K+ is formed when K loses this outermost single electron to attain “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+.
How do you determine ionic radius?
The ionic radius is half the distance between atomic ions in a crystal lattice. To find the value, ions are treated as if they were hard spheres. The size of an element’s ionic radius follows a predictable trend on the periodic table. As you move down a column or group, the ionic radius increases.
Which of the following ion is the largest in size a K b Ca2+ C Cl − d/s 2?
Which ion is largest Na+ mg2+ Ca2+?
K+ has the largest radius.
What determines ionic radius?
Ionic radius is determined by measuring the atom in a crystal lattice. Removal of electrons results in an ion that is smaller than the parent element. Addition of electrons results in an ion that is larger than the parent atom.