Explanation:

Ionization power goes up throughout the period and down as you go down the group. This is the power required to remove an electron. That the detailed elements it would certainly be hardest to remove an electron from Flourine as the optimistic nucleus close to the electron orbitals has higher attractive force.

You are watching: Of the following which atom has the smallest atomic radius


Explanation:

Helium has actually the smallest atomic radius. This is as result of trends in the routine table, and the efficient nuclear fee that stop the valence electrons close to the nucleus. Atom radius decreases together you move across a duration from left to right and decreases together you move up a group from bottom to top. Due to the fact that He is in ~ the top right-hand corner of the table, it must have the smallest atomic radius.


Explanation:

The periodic table enables you come follow basic guidelines or "trends" the are shown on the table. Atom radius is one together trend. Together you relocate down in groups, further shells are included to the atom which results in an increase in radius. As you move to the ideal on the regular table, the nuclear charge rises which traction the elctrons closer come the nucleus. Together a result, the atom radius will certainly decrease when moving to the right.


Explanation:

Atomic radius decreases as you relocate left to best on the regular table. Together atomic number increases, for this reason does the number of positive proton in the nucleus. To the far left of a period, electrons room widespread in ~ a new electronic shell. To the far right the the period, the electron still occupy the very same shell, however experience greater attractive pressure toward the nucleus as result of the greater number of proton present.

While that is true the flourine is the most electronegative element, this does not affect atomic radius (though the two patterns follow comparable patterns).


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Example concern #45 : The routine Table


The distinction in the atom radii of fluorine and lithium is most comparable to the difference in the atomic radii of i beg your pardon pair of elements?


Possible Answers:

Cs and Bi


Fe and Br


As and Se


Be and B


Na and also Cl


Correct answer:

Na and also Cl


Explanation:

The atom radius of aspects decreases together one move from left come right throughout the periodic table. The degree to which lithium has actually a larger atomic radius than fluorine is most similar to the distinction between another pair of facets within the very same groups, the are additionally found on the left and right sides of the table.

Fluorine and chlorine are both halogens, and also lithium and also sodium are both alkali metals. Fluorine and also lithium are both in the second period, and sodium and chlorine room both in the third. As you move from lithium come fluorine throughout the table, you will see comparable changes and also patterns as if friend were relocating from salt to chlorine.


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Example question #46 : The regular Table


Which the the following atoms has the largest atomic radius?


Possible Answers:

Chlorine


Oxygen


Fluorine


Sulfur


Correct answer:

Sulfur


Explanation:

When predicting exactly how atomic radius will adjust as you relocate along the regular table, remember these two trends.

1. Together you move down the table in a given group, the atomic radius of the atoms will certainly increase.

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

Knowing this, we can compare the feasible options. Sulfur and chlorine space in the lowest period, therefore they have actually the largest atomic radii. Due to the fact that sulfur is come the left the chlorine ~ above the regular table, that will have actually a bigger atomic radius. Together a result, sulfur has actually the biggest atomic radius out of the feasible options.


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Example question #47 : The routine Table


Which the the following atoms has actually the the smallest atomic radius?


Possible Answers:

Nitrogen


Chlorine


Oxygen


Sulfur


Fluorine


Correct answer:

Fluorine


Explanation:

As friend move throughout a single period (row) on the routine table, the atom radius that each succeeding atom decreases. Together you move down a single group (column), the atomic radius of each succeeding atom increases. As you relocate down a group, the maximum energy level the the valence shell increases, hence increasing the size of the electron cloud and also atomic radius. Together you move throughout a period to the right, the variety of protons in the cell core increases. This additionally increases the attraction between the positively-charged nucleus and negatively-charged electrons, pulling the electron in tighter and reducing the atomic radius.

The the smallest atoms space going to be situated toward the upper best of the periodic table. The our provided answer choices, fluorine is the closest to the upper right, and thus has actually the smallest radius.


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Example concern #48 : The periodic Table


Which the the adhering to values does not rise as you move left to ideal in a period of the routine table?


Possible Answers:

Electronegativity


Atomic radius


Electron affinity


Ionization energy


Correct answer:

Atomic radius


Explanation:

Atomic radius will decrease together you relocate to the right, due to the fact that the atomic variety of the element will it is in increasing. This outcomes in a more positively charged nucleus that pulls the electrons closer to the center. As a result, atomic radius will significantly decrease native left come right.

Electronegativity, ionization energy, and electron affinity all rise to the best of the periodic table.


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Example inquiry #41 : The regular Table


List the following elements in bespeak of decreasing atomic radius.

Neon, fluorine, chlorine, oxygen, sodium, magnesium

 


Possible Answers:

*


*



*


*


Correct answer:


Explanation:

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

Four the the elements noted are within the same period, so us will ar those four elements in stimulate of decreasing atom radii:

*

Now we simply have to place Neon, Fluorine, and also Oxygen, which room in the very same period. The tendency of to decrease radii with increasing atomic number is not true because that noble gases, as they have actually a complete octet and are slightly larger to balance out electron-electron repulsion native the octet. In bespeak of decreasing atomic radius:

*

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


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Example concern #50 : The regular Table


Which of the following have the biggest atomic radii within their respective periods (row)?


Possible Answers:

The noble gases


Alkali metals


Transition metals


Halogens


Correct answer:

Alkali metals


Explanation:

The alkali steels are found in the very first group (column) that the regular table, top top the outward side. They have only 1 loosely bound electron in their outermost shells, and also their reliable nuclear fee values space low, providing them the biggest atomic radii of every the facets in your periods.

See more: Which Department Is Often Responsible For The Direct Materials Price Variance


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