answersLogoWhite

0


Best Answer

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.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

11y ago

Atomic radius decreases when you go from group 1 to group 2 across a period.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How does the atomic radius change from left to right in Groups 1 and 2?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Which of the following decrease as you go from left to right on the periodic table?

The atomic radius decreases as you go from left to right. or atomic radius cation radius && anion radius -barbie=]


In general howe dose atomic radius change across a period from letf to right?

it decreases


What property increases going down the periodic table?

Your question is incorrect. It should be increases rather than decreases. Well it is the proton number (Z) that increases.


How does the atomic radius change from the left to the right horizontal row in the periodic table?

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


WHAT BEST STATES THE TREND IN ATOMIC RADIUS ACROSS THE PERIODIC TABLE?

As you move across the periodic table from left to right (across a period), the atomic radius of the elements tends to decrease.


How does the atomic raduis change across a period of the periodic table?

Atomic radius usually decreases from left to right across a period of the periodic table.


What happens to the atomic radius when you go from left to right on the periodic table of elements?

The atomic radius decrease, with several exceptions in periods 6 and 5.


Smallest to largest atomic radius PotassiumMagnesiumCalciumRubidium?

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


What changes from left to right as you move through the groups of periodic table?

Atomic radius increases across a group. Metallic character also increases.


How does the atomic radius vary in a period?

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


Electronegativity increases when atoms .?

B. are located on the right on the Periodic TableC. have a small atomic radius


Does the atomic radius decrease as you move up a group and across a period from left to right on 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.