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Atomic radius decreases across a period from left to right, except for the noble gases.

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How does atomic radius vary in group and in period on periodic table?

Down a period the atomic radius increases as the number of shells (or energy levels) increases. Across a period the atomic radius decreases as the effective nuclear charge increases.


How does atomic radius vary down a group?

Atomic radius increases down a group on the periodic table because with each additional period an energy level is added.


Why does argon have the smallest atomic radius in period 3?

Argon doesnt have the smallest atomic radius, its chlorine.Argon has the largest atomic radius in period 3.


Which element in the 2 period has the greatest atomic radius?

Neon (Ne) in the second period on the periodic table of the elements has the highest atomic number in that period of 10.


What trend does the atomic radius along a period on the periodic table?

The atomic radius decreases along a period. It is because of increasing effective nuclear charge along a period.


What element in the second period has the smallest atomic radius?

Fluorine


Why does indium have the largest atomic radius?

Indium has the largest atomic radius among elements in its period because of the shielding effect. With more electron shells, the outer electrons are further from the nucleus, resulting in a larger atomic radius.


Why does sodium have a larger atomic radius than aluminum?

Sodium has a larger atomic radius than aluminum because as you move down a group in the periodic table, the atomic radius increases due to the addition of energy levels. Sodium is located in the third period, while aluminum is in the second period, so sodium has more energy levels and a larger atomic radius.


What is the smallest atomic radius in period 5?

The smallest atomic radius in period 5 belongs to the element with the highest nuclear charge, which is iodine (I) from Group 17. This is because as you move across a period, the nuclear charge increases, leading to stronger attraction for the electrons and a smaller atomic radius.


What make the atomic radius change along the periodic in periodic table?

Along a period, nuclear charge increases. hence, atomic radius decreases.


Which group of the main group elements contains the largest elements - Atomic Radius?

Group-1 has largest atomic radius. It decreases across a period


What makes the atomic radius change along the periodic in the periodic table?

Along a period, nuclear charge increases. hence, atomic radius decreases.