Quick Answer: Which Is Bigger Br Or Rb+?

Why is K+ larger than ca2+?

K has four shells, S only has three.

(b) List the ions in order of increasing size.

ION RADIUS K+ < Cl- < S2- In this isoelectronic series, more protons means smaller radius.

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

Why is Br − is slightly smaller than se2 −?

Why is Br− is slightly smaller than Se2−? A. The Br− ion is smaller than the Se2− ion because the Br− ion has a larger nuclear charge and more extra electrons than the Se2− ion.

How can you tell which atom is larger?

An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.

Is RB or RB+ bigger?

We know that Rb+ is smaller than Rb because it loses an electron and has one less shell. Another reasoning is that since Rb+ has the same number of protons but less electrons, the electrons are held more tightly in Rb+. … Now between F and F-: F- has one more electron, which causes the radius to be bigger.

Which ion has the largest radius se2 F o2 Rb+?

Answer: The answer is “Rubidium Rb+”. Explanation: While moving from left to right in periodic table the nuclear attraction between nucleus and electrons increases and the size decreases.

Is H bigger than F?

no actually flourine anion is larger in size than H anion. … Both of them H,F ions are smaller in size. But as the questioned was asked ,which was is much smaller,then it will be F(anion).

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 ion has the largest radius?

K+ ionExplanation: 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.

Why is an atom of K+ smaller than an atom of K?

When it becomes ion as K+, so due to lose of electron, it has 19-protons & 18-electrons. Due to excess of proton in potassium ion, electron-proton attraction becomes dominant which makes its size smaller as compared to potassium atom which is basically neutral having no charge. .

Which one is larger in size 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. … Explanation – when Br gain an electron then one electron in Br increases and this lead to increase in atomic size.