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As you move across a row on the Periodic Table, the atomic radii becomes smaller due to the attraction between positive protons and negative electrons. As you move down a column, the radii increase due to the addition of valance electrons.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoFrom left to right across a period, atomic radius goes down (even though atomic number goes up.) From top to bottom down a group, atomic radius goes up (because you're adding a principal energy level.) This trend, along with most of the others, has to do with the amount of attraction between the positively charged nucleus and the negatively charged electron cloud.
Wiki User
∙ 9y agoThe periodic trend that occurs for atomic radius is that they decrease as you move from left to right.
Wiki User
∙ 11y agoIn the periodic table of elements, atomic radius decreases slowly as you go from left to right in a period, and it increases rapidly as you go from top to bottom in a group.
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How does atomic radii increase or decrease in the table?
atomic radii increases from left to right in the periodic table from metal to non metal in the right
What are on the periodic table is the greatest in atomic radii?
group 1 elements
Do the elements to the right of the periodic table have small or large radii?
Across a period the atomic size decreases. Hence elements in the right side of the periodic table have small size / radii.
Which atom has the smallest atomic radii?
Fluorine has the smallest atomic radii because it is towards the right of the periodic table and on top.
Which characteristics both generally decrease in period three from left to right?
Atomic radii decreases from left to right in the periodic table
Are there any trends to the periodic table?
Atomic Radii,Ionic Radii, First Ionization Energy,Second and Higher Ionization Energies, Electron Affinity.
How can you find out the atomic radii?
Look for a reference chart in a book or online. Look for a Periodic Table of the Elements that has the atomic radii on it.
How does atomic radii increase or decrease in the table?
atomic radii increases from left to right in the periodic table from metal to non metal in the right
What are on the periodic table is the greatest in atomic radii?
group 1 elements
Where are atoms with the largest and smallest atomic radii found?
The atoms with the largest atomic radii are found in the lower right side of the periodic table. Smallest atoms are found in the higher left part of the periodic table. He has the smallest atomic radii.
Do the elements to the right of the periodic table have small or large radii?
Across a period the atomic size decreases. Hence elements in the right side of the periodic table have small size / radii.
How do atomic radii change from left to right across a horizontal row of the periodic table and what is the main reason?
Atomic radii decreases on moving from left to right as the effective nuclear charge increases.
As you move down the periodic table from carbon through lead atomic radii...?
Generally increase
The elements with the smallest atomic radii are found in the?
The elements with the smallest atomic radii are found in the top of the P block of the periodic table. Helium (He) has the smallest atomic radius. Francium, on the other side of the periodic table (very bottom of the S block), has the largest atomic radius.
Which atom has the smallest atomic radii?
Fluorine has the smallest atomic radii because it is towards the right of the periodic table and on top.
Why do atomic radii generally get larger going down the periodic table?
As more energy levels are occupied by electrons, the atomic radius gets larger.
What explains the observed trend in the atomic radii going down the periodic table?
The more energy levels that are occupied by electrons, the larger the atomic radius.
