answersLogoWhite

0

Atomic size decreases across a period as the effective nuclear charge increases. Atomic size increases down a group as the energy level (shells) increases.

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

How are the size of the elements effected on the periodic table?

Atomic size increase down the group and decreases across the period.


The alkaline earth element having the largest atomic radius is found in period?

7th period because atomic size down the group increases. And Alkali Earth metals are found only in Group 1. The element is in Group 1 and period 7


How does the numbers of electrons change across a period of elements?

The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).


What is a period property?

The properties which change regulary from top to bottom in a group and from leaft to right a period are called periodic property.


How does the number of valence electrons for element change across a period?

The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).


How does ionization energy of elements in the same period change?

Ionization energy increases as you go across a period, but as you go down a group it decreases.


What period and group is Carbon?

Carbon is in group 14, period 2


How did the body size of the horse change during its evolution?

ur question was whyhorse change size of bodyist tell me is size of your body remains same from the period of your chilhood,not at allwith the passage of time changes occours so now i hope you will understand why horse change size of body


Give the period and group in which each of these elements is found nitrogen sodium iodine and mercury?

Nitrogen is period 2, group 15. sodium is period 3 group 1, iodine is period5 group 17. mercury is period 6 group 12.


What pattern in atomic size occurs in the periodic table?

In the periodic table, the atomic size increases with every period due to addition of an extra shell. The atomic size decreases with every group since no. of electrons and protons are increased with every group across a period leading to extra electrostatic force of attraction between electrons and the nucleus and thus shrinking the size of the atom.


Does elements on the periodic table decrease in atomic size when you move across a period from left to right and when you move down a group?

Atomic size generally decreases as you move across a period from left to right due to increasing effective nuclear charge. However, atomic size tends to increase as you move down a group due to the addition of more electron shells.


What are the periods and groups in which these elements are found nitrogen sodium iodineand mercury?

nitrogen- group 15; period 2 sodium- group 1; period 3 iodine- group 17; period 5 mercury- group 12; period 6