Which element has the largest radius?

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 elements have the largest radius?

Francium has the largest, Helium has the lowest. Atomic radius increases as you go to the left and downward due to the attraction of electrons and the nucleus in an atom.

Which elements have the smallest radius?

Which element has the smallest atomic radius? Explanation: Helium has the smallest atomic radius.

Which ion has the largest radius?

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

Which element has the largest radius Na or CS?

(A) Comparison of Atomic and Ionic Radius of Group 1 (IA, alkali metals) Elements

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 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 atomic radius of RB?

290 pm

Does atomic radius increase from left to right?

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 element has the largest atomic radius in Group 1?

Trends in Atomic Radius of Group 1 Elements

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 the largest radius se2 F O2 Rb+?

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

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 atom is larger Li or O?

So, they both have n=2, or 2 shells, but O has more protons in the nucleus pulling the electrons closer. Thus, Li would have a larger atomic radius.

Which metal has the smallest atomic 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.

Is K larger than K+?

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+.