Quick answer: Why Is The Atomic Radius Of K Larger Than Br?

Why does potassium have a larger atomic radius?

As an example, potassium (K) has a larger average atomic radius (220 pm)than sodium (Na) does (180 pm).

The potassium atom has an extra electron shell compared to the sodium atom, which means its valence electrons are further from the nucleus, giving potassium a larger atomic radius..

Is BR smaller than Br?

These are isoelectronic ions. The ion with the fewest number of protons attracting the same number of electrons will have the largest radii. Br– is the larger ion.

Which one has the largest size BR I CL?

This rules out Br and Cl. I- is Iodine in the 1- oxidation state. This means that is has 1 extra electron, and its radius is therefore greater than I. This means that I- is the greatest in size (radius).

Is Cl or Br bigger?

As Br is smaller than Cl; therefore, Br- have a smaller ionization energy than Cl-. In short, since the outermost electron in bromine is farther from the nucleus than the outermost electron in chloride, it takes less energy to remove the outermost electron in bromide.

Is H bigger than F?

trend of ionic(Anion) size F(ion)

Which is smaller Cl or Br?

As Br is smaller than Cl; therefore, Br- have a smaller ionization energy than Cl-. In short, since the outermost electron in bromine is farther from the nucleus than the outermost electron in chloride, it takes less energy to remove the outermost electron in bromide.

Which has a bigger atomic radius BR or BR?

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.

What atom has the largest atomic 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.

Is K+ bigger than AR?

K+ has one more proton in its nuclei than Ar, so I would expect that if both have the same electron configuration – the one with more protons in its nuclei would have the smaller radius since the electric force between its nuclei and its electrons is bigger, hence pulling the two closer together…

Which is smaller in size Cl or Ar?

Chlorine is smaller than Argon.

Which has a larger radius S or O?

Consequently for the neutral atoms, S would be larger than O. For the sulfide ion, reinforcing this effect is the large, excess 2- charge that greatly increases the radius of S2- as compared with the neutral S atom.

Why is the atomic radius of hydrogen smaller than potassium?

Across a period, atomic radius decreases from left to right. Explain why the atomic radius of hydrogen is so much smaller that the atomic radius for potassium. For ionic radii, that means the atom or element has a CHARGE. … K^+ is smaller in size than K because it has one less electron.

Which is larger k or k+?

The size of the potassium ion depends on the location of the single electron, present on fourth energy level which is the highest, from the nucleus. 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+.

Which has the largest 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.

What has the smallest atomic radius?

HeliumHelium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus. Atomic radius decreases as you move across a period from left to right and decreases as you move up a group from bottom to top.

Which has the largest atomic radius S or O?

Atomic Radius of the elementsHelium31 pm161 pmOxygen48 pm167 pmHydrogen53 pm169 pmNitrogen56 pm171 pmCarbon67 pm171 pm35 more rows