Because they contain electrons in the 7th energy level, which is farthest from the nucleus.
Atomic number of an element can be found on the periodic table. It is located at the upper left-hand corner of the table.
The noble gases are located in group 18, which starts at the upper right hand corner of the periodic table with helium.
It is USUALLY on the top right corner of the box.Example: Hydrogen1 1.01HThe bold #(1.01) is the elements atomic mass.*the atomic mass may vary because some books round to a certain place.
The electron pattern is the same among elements in a family. This is the reason the periodic table is arranged as it is.
halogens are in group 17 and found on the far right corner of the periodic table to the left of the noble gases
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.
The atomic number is the number located in the upper left corner of the element on the periodic table. Elements are listed in order of increasing atomic number.
Cesium is largest element on the periodic table.The atomic radius of Cs is around 273pm. It is present at the lower left corner of the table.
At the lower right corner of the Periodic Table.
The metals in the lower left corner of the periodic table are the least electronegative.
Atomic number of an element can be found on the periodic table. It is located at the upper left-hand corner of the table.
the atomic number in the top left hand corner of the element in the periodic table
The atomic number of an element can be found on most any Periodic Table of Elements. The atomic number is found in the upper left hand corner of the element's square. The number represents the number of protons one atom of the element has.
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.
The Atomic Number
The noble gases are located in group 18, which starts at the upper right hand corner of the periodic table with helium.
they are located on the top right corner