Which of the following ion has smallest radius?

Which ion has smallest radius?

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.

Ionic Radii and Isoelectronic Series.

Ion Radius (pm) Atomic Number
N 3− 146 7
O 2− 140 8
F − 133 9
Na + 98 11

Which of the following 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.

Which ion has the largest radius?

1 Answer. Ernest Z. K+ has the largest radius.

Which ion is smaller Cl or K+?

In other words, K+ has bigger effective nuclear charge than Cl− , which translates to a bigger net positive charge felt by the outermost electrons. This will compress the energy levels a bit and make the ionic radius smaller for the potassium cation. Therefore, the chloride anion will have the larger atomic radius.

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Which element in Group 2 has the largest radius?

Trends in Atomic Radius of Group 2 Elements

name atomic radius (pm) Trend
magnesium 160
calcium 197
strontium 215
barium 217 largest

Which cation has the smallest radius?

Note trends for ionic radii: ionic radius of a cation is less than atomic radius of the atom. ionic radius of an anion is greater than atomic radius of the atom.

Key Concepts.

atomic radius decreases across a period from left to right Li

How do you find atomic radius?

Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.

Which of the following has the largest atomic radius?

So Cesium has the largest atomic radius among the given elements.

Which has the largest atomic radius lithium or potassium?

Lithium has an atomic number of 3. It can be accomodated in 2shells. Because of the large atomic sells of Potassium, it’s atomic radius is Much larger than that of Sodium or Lithium.

What is the primary reason atomic radius?

Answer: As you move across a period the electrons are being added to the same shell. … So, there is a greater nuclear attraction and, because the electrons are being added to the same shell that shell gets pulled in more. This causes a decrease in atomic 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.

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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 ion has the largest radius Se2 F O2 Rb+?

Answer. Answer: The answer is “Rubidium Rb+”.

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