# Which has the largest ionic radius among ca2 mg2 ba2?

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Barium +2 has largest ionic radius because atomic number of barium is 56 which means that the shape of barium is lager than that of Ca+2 , Mg+2 !!

## Which has largest ionic radius Ca2+ Mg2+ ba2+?

Ba+2 has the largest size as it has the largest atomic number and hence maximum no. of shells among the given species. Was this answer helpful?

## 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+.

## Which ion has the largest ionic radius?

Explanation: The ionic radii of cations follow the same trends as atomic radii. They increase from top to bottom and from right to left in the Periodic Table. Thus, the ion with the largest radius is closest to the lower left corner of the Periodic Table, and that is the K+ ion.

## What is the ionic radius of Ca2+?

*Metallic radii for 12-coordination are given for all metals.

Atom/Ion r(pm)
Br- 196
C (77)
Ca 197
Ca2+ 100

## Is Br or Br bigger?

Br – will have the largest atomic size because Br- has one extra electron in its valence shell which due to its unbalanced negative charge will be repelled and hence the atomic radius of Br- will increase.

## Which is larger K+ or Ca2+?

(d) K+ is larger than Ca2+ Isoelectronic; Ca2+ has more protons to pull e- inward.

## 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 has largest size?

Consequently, the ion with the greatest nuclear charge (Al 3 +) is the smallest, and the ion with the smallest nuclear charge (N 3−) is the largest.

N 3− 146 7
O 2− 140 8
F − 133 9
Na + 98 11

## Which ion has the smallest radius?

As Oxygen is present at the top of the group, therefore, it has the smallest radius due to less number of shells.

## Which element has a larger ionic radius than calcium?

For a) the neutral Ca atom has a larger radius than the Ca2+ ion. This is because the loss of electrons reduces the shielding effect between the electrons and the nucleus, so the attraction of the nucleus for the electrons is greater, reducing the radius. For b) S2− has a larger radius than the neutral S atom.