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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.
Wiki User
∙ 12y ago
The elements with the smallest atomic radii are found in the top right corner of the Periodic Table, specifically in the noble gases group. These elements have a stable configuration and therefore have a very compact atomic structure.
Wiki User
∙ 10y agolower left-hand corner of the periodic table
Wiki User
∙ 12y agoIn the highest numbered period (row) of the table.
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What factor determines the focal length of a lens?
It is determined by the radii of curvature of its two faces.
Why does the reactivity increase down the group 7?
The reactivity of Group 7 elements (halogens) increases down the group because atomic size increases, leading to weaker bonding within molecules. This makes it easier for larger atoms to gain an electron to achieve a full outer shell, resulting in higher reactivity. Additionally, as the number of electron levels increase down the group, the elements are in a higher energy state, making them more reactive.
What determines the focal length of two sides of a lens?
Their radii of curvature and the refractive index of the material of the lens.
How many neutrons are in Se?
Since Selenium has an atomic number of 34, it has 34 protons and electrons at its elemental resting state. The most common isotopes have 44 and 46 neutrons, which you get from subtracting the atomic number from the atomic mass.
What is the focal length of sunglasses?
The focal length of a Sunglass lens is theoretically infinite. It is because the radii of curvatures of the front and back surfaces are equal.
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.
What elements has the smallest atomic size K Ca Na Ar or Kr?
Ar, using the table of atomic radii in wikipedia.
What group of elements have members of the smallest atomic radii for a given period?
Noble gases have the smallest atomic radius.
Of the following which has smallest atomic radius sulfur aluminum sodium barium?
Atomic radii become larger as you go from top to bottom of the periodic chart, but they get smaller as you go from left to right. Therefore, the elements with the smallest radii are in the upper right hand corner. Of S, Al, Na, and Ba, sulfur is the closest to the upper right corner and has the smallest radius of those elements.
Why are the ionic radii of metallic elements smaller than the atomic radii of the same elements?
The ionic radii of metallic elements is smaller than its atomic radii, because the ion has less electrons. This gives it a smaller electron cloud and makes the atom smaller.
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.
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.
Why do halogens have the smallest atomic radii in their respective periods?
Halogens have maximum effective nuclear charge. So the high number of protons in the nucleus attract electrons and thus the size of the atomic radii is the smallest.
What happens to the atomic radii of the elements as a group is descended?
As we descend down the group, the atomic radii increases. This is because the number of shells increases.
What is the change in atomic radii for the elements in period 2?
Seventeen
Is atomic radii of d block elements is smaller than p block reason out?
Yes, the atomic radii of d-block elements are generally smaller than p-block elements due to greater effective nuclear charge resulting from the filling of d orbitals that shield the outer electrons less effectively compared to p orbitals. This leads to stronger attraction between the nucleus and valence electrons, resulting in a smaller atomic size for d-block elements.
What is the relationship between the atomic numbers and ionic radii of the elements in the group 3A?
I think that the ionic radii decrease
