On the periodic table, where are atoms with the largest atomic radius located?

Question

On the periodic table, where are atoms with the largest atomic radius located??  
A. At the top of their group  
B. In the middle of their group  
C. At the bottom of their group  
D. Along the right hand side

Accepted Answer

Correct Answer: (C)At the bottom of their group. 
Rationale: Atoms with the largest atomic radius are located at the bottom of their group on the periodic table.Atomic radius refers to the size of an atom, typically measured as the distance from the nucleus to the outermost electron shell. As you move down a group on the periodic table, each successive element has an additional energy level (electron shell). These extra shells place the outermost electrons farther from the nucleus, increasing the overall size of the atom. The effect of increased distance and electron shielding outweighs the increased nuclear charge, resulting in a larger atomic radius.A. At the top of their groupElements at the top of a group have fewer electron shells, meaning their outer electrons are closer to the nucleus. With fewer shells and less shielding, the nucleus pulls the electrons in more tightly, producing a smaller atomic radius. These atoms are among the smallest within their groups.B. In the middle of their groupElements located in the middle of a group have more electron shells than those at the top but fewer than those at the bottom. As a result, their atomic radius is intermediate in size and not the largest within the group.C. At the bottom of their groupElements at the bottom of a group have the greatest number of electron shells. Each additional shell increases electron shielding and places the valence electrons farther from the nucleus. This leads to a weaker effective nuclear attraction on the outer electrons and a larger atomic radius. For example, cesium has a much larger atomic radius than lithium, even though both are in the same group.D. Along the right-hand sideAs you move from left to right across a period, atomic radius generally decreases. The number of protons increases, strengthening the nuclear attraction without adding new electron shells. This pulls electrons closer to the nucleus, making atoms on the right-hand side of the periodic table relatively small.ConclusionAtomic radius increases down a group because additional electron shells are added, increasing shielding and distance from the nucleus. As a result, atoms with the largest atomic radius are found at the bottom of their group on the periodic table.

On the periodic table, where are atoms with the largest atomic radius located?

A
At the top of their group

B
In the middle of their group

C
At the bottom of their group

D
Along the right hand side

Atoms with the largest atomic radius are located at the bottom of their group on the periodic table.

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On the periodic table, where are atoms with the largest atomic radius located?

A At the top of their group B In the middle of their group C At the bottom of their group D Along the right hand side

Atoms with the largest atomic radius are located at the bottom of their group on the periodic table.

Topic Flashcards

Mini Quiz

Related Questions

A
At the top of their group

B
In the middle of their group

C
At the bottom of their group

D
Along the right hand side