The atomic radius increases from top to bottom in groups 1 and 2 of the modern Periodic Table. This happens because the number of energy shells increase and are occupied by the increasing number of electrons. As the subsequent shells are completed they are located further from the nucleus due to the decreasing force of attraction between nucleus and the electrons. This leads to an increase in atomic radius.
== == Atomic radius is a result of the completion of orbitals as atoms get heavier by adding neutrons and protons to the nucleus. The larger nucleus can hold more electrons. The cloud of electrons determines the atomic radius. Each completed orbital (S,P,D or F) takes up room. The higher orbitals have a greater radius . Unlike the old Bohr theory of atoms (little electrons in orbits around the nucleus), the new probability distribution interpretation of the electrons leads to spherical or hourglass shaped volumes.
Atomic radius decreases when you go from group 1 to group 2 across a period.
Atomic radius usually decreases from left to right across a period of the periodic table.
the atomic radius decreses from left to right in periodic table due to increase in the number of succesive element the electrons of the outermost shell are more attracted towards nucleus and the atomic radius or atomic size decreases.
Because the trend is the same. Atomic radius decreases from left to right across a period.
I'm guessing you are acking Atomic Radius. The atomic radius decreases and you go left to right because the shielding effect from the lower electrons stays almost constent while the elements gain more protons adding to the effective nuclear charge pulling the electrons closer to the nucleus.
nitrogen- .70 angstroms (oxygen- .66 angstroms)
The atomic radius decreases as you go from left to right. or atomic radius cation radius && anion radius -barbie=]
it decreases
Your question is incorrect. It should be increases rather than decreases. Well it is the proton number (Z) that increases.
from left to right the atomic radius decreases as the electrons that get added are added in the same shell as they are in the same period. the shielding effect remains constant but the proton number increases which inturn increases the effective nuclear pull on the electrons bringing the electrons closer to the nuclei hence decreasing the radius of the atom
As you move across the periodic table from left to right (across a period), the atomic radius of the elements tends to decrease.
Atomic radius usually decreases from left to right across a period of the periodic table.
The atomic radius decrease, with several exceptions in periods 6 and 5.
mg, ca,k ,rb magnesium, calcium, potassium, rubidium as you do down a group atomic radius increases as you go across a period atomic radius decreases
Atomic radius increases across a group. Metallic character also increases.
Atomic radius decreases across a period from left to right, except for the noble gases.
B. are located on the right on the Periodic TableC. have a small atomic radius
the atomic radius decreses from left to right in periodic table due to increase in the number of succesive element the electrons of the outermost shell are more attracted towards nucleus and the atomic radius or atomic size decreases.