Explanation:

Ionization energy goes up throughout the duration and down as you go under the group. This is the energy required to remove an electron. Of the noted elements it would be hardest to eliminate an electron indigenous Flourine as the positive nucleus close come the electron orbitals has greater attractive force.

You are watching: Which ion has the smallest radius?


Explanation:

Helium has the the smallest atomic radius. This is because of trends in the periodic table, and also the effective nuclear fee that holds the valence electron close to the nucleus. Atom radius decreases together you move throughout a period from left come right and also decreases together you relocate up a team from bottom to top. Since He is in ~ the upper right-hand edge of the table, it must have the smallest atomic radius.


Explanation:

The routine table enables you come follow general guidelines or "trends" that are presented on the table. Atom radius is one such trend. As you move down in groups, more shells are added to the atom which outcomes in an increase in radius. Together you relocate to the appropriate on the regular table, the atom charge rises which traction the elctrons closer to the nucleus. Together a result, the atomic radius will certainly decrease when moving to the right.


Explanation:

Atomic radius decreases together you move left to best on the regular table. Together atomic number increases, for this reason does the number of positive proton in the nucleus. Come the far left of a period, electrons space widespread within a brand-new electronic shell. To the far right of the period, the electrons still accounting the very same shell, but experience better attractive pressure toward the nucleus as result of the greater number of proton present.

While the is true the flourine is the most electronegative element, this walk not influence atomic radius (though the two fads follow comparable patterns).


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Example question #19 : routine Trends


The difference in the atom radii the fluorine and also lithium is most comparable to the difference in the atom radii of which pair that elements?


Possible Answers:

As and Se


Fe and also Br


Cs and Bi


Na and also Cl


Be and also B


Correct answer:

Na and Cl


Explanation:

The atomic radius of elements decreases together one moves from left to right throughout the periodic table. The degree to i m sorry lithium has a bigger atomic radius than fluorine is most comparable to the distinction between one more pair of aspects within the exact same groups, that are additionally found on the left and right political parties of the table.

Fluorine and also chlorine space both halogens, and lithium and also sodium are both alkali metals. Fluorine and also lithium space both in the 2nd period, and also sodium and chlorine space both in the third. As you relocate from lithium to fluorine across the table, you will certainly see comparable changes and patterns as if friend were moving from salt to chlorine.


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Example inquiry #20 : routine Trends


Which the the complying with atoms has the biggest atomic radius?


Possible Answers:

Oxygen


Fluorine


Sulfur


Chlorine


Correct answer:

Sulfur


Explanation:

When predicting how atomic radius will change as you move along the routine table, remember these 2 trends.

1. As you move down the table in a given group, the atom radius that the atoms will increase.

2. Together you relocate left to appropriate in a offered period, the atomic radius will certainly decrease.

Knowing this, we have the right to compare the feasible options. Sulfur and also chlorine are in the shortest period, therefore they have the biggest atomic radii. Due to the fact that sulfur is to the left that chlorine ~ above the routine table, that will have actually a bigger atomic radius. Together a result, sulfur has the biggest atomic radius the end of the possible options.


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Example inquiry #21 : regular Trends


Which the the adhering to atoms has the smallest atomic radius?


Possible Answers:

Chlorine


Nitrogen


Oxygen


Sulfur


Fluorine


Correct answer:

Fluorine


Explanation:

As you move throughout a single period (row) on the periodic table, the atomic radius the each succeeding atom decreases. Together you move down a solitary group (column), the atom radius of each succeeding atom increases. Together you move down a group, the maximum power level the the valence shell increases, thus increasing the dimension of the electron cloud and also atomic radius. Together you move throughout a duration to the right, the number of protons in the cell core increases. This also increases the attraction in between the positively-charged nucleus and negatively-charged electrons, pulling the electrons in tighter and also reducing the atomic radius.

The the smallest atoms room going to be located toward the upper appropriate of the routine table. The our given answer choices, fluorine is the closest to the upper right, and thus has the the smallest radius.


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Example inquiry #22 : routine Trends


Which that the adhering to values go not increase as you move left to right in a duration of the regular table?


Possible Answers:

Ionization energy


Electronegativity


Electron affinity


Atomic radius


Correct answer:

Atomic radius


Explanation:

Atomic radius will certainly decrease together you move to the right, since the atomic variety of the element will be increasing. This outcomes in a more positively fee nucleus the pulls the electron closer to the center. As a result, atom radius will significantly decrease from left to right.

Electronegativity, ionization energy, and electron affinity all increase to the right of the regular table.


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Example concern #23 : periodic Trends


List the following facets in order of decreasing atom radius.

Neon, fluorine, chlorine, oxygen, sodium, magnesium

 


Possible Answers:


*


*


*


*


Correct answer:


Explanation:

Within the same duration of the periodic table, atom radii decrease together there are more charged particles to entice one another, and within the exact same group, atom radii increases. The boost from the ascending group normally speaking is bigger than the decrease under a period.

Four that the elements noted are in ~ the same period, so us will place those four aspects in bespeak of decreasing atom radii:

*

Now us simply have to place Neon, Fluorine, and Oxygen, which are in the exact same period. The trend of to decrease radii with enhancing atomic number is not true because that noble gases, together they have a finish octet and also are slightly bigger to balance out electron-electron repulsion from the octet. In stimulate of decreasing atomic radius:

*

The rise from the octet is much less than the boost from electron-electron repulsion.


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Example inquiry #41 : The regular Table


Which that the following have the largest atomic radii within your respective periods (row)?


Possible Answers:

Alkali metals


Transition metals


Halogens


The noble gases


Correct answer:

Alkali metals


Explanation:

The alkali steels are discovered in the first group (column) of the routine table, top top the leftmost side. They have only 1 loose bound electron in their outermost shells, and also their effective nuclear fee values room low, offering them the largest atomic radii of every the facets in their periods.

See more: A Terabyte Of Storage Space: How Many Photos Can 1 Terabyte Hold


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