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Do the atomic size decreases or increases as you go from left to right across a period?
Wiki User
∙ 12y ago
The Periodic Table is organized into atomic number (how many protons) and size of each element. The sizes of each elemental atom increase from left to right and top to bottom. Hydrogen (H) is the smallest atom, while Cesium (Cs) is the largest.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoGenerally, atomic size increases as you descend a group. For example, lithium in group 1A is very small because there are only three electrons to accommodate. Potassium is in group 1A but is two periods lower. It has 17 electrons to accommodate and they take up more space. Radii also increase as you move left within a row.
Wiki User
∙ 11y agoSize typically increases going down a group due to an increasing number of electron shells, where the inner shells reduce the attractive forces of the nucleus and repel the electrons in the outer shell
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Wiki User
∙ 12y agoDecrease because the number of protons increase
Wiki User
∙ 12y agodecreases because the charge increases which means the electrons are more tightly held
Wiki User
∙ 11y agoWhen going left to right in a given row of the periodic table the atomic radius increases. When moving top to bottom of a given column the atomic radius increases.
Wiki User
∙ 13y agodecrease
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Atomic size generally as you go down a group?
Atomic size generally increases as you go down a group
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
As you move across a period of a periodic table from left to right what happens to the elements electronegativity?
it decreases
What two atomic trends increases as you move across the periodic from left to right?
Electronegativity, electron affinity, nonmetalic nature, acidic nature of oxides, valency with respect to oxygen ( from 1 to 7), number of electrons in the outer most shell ( 1 to 8) increases across a period from left to right
An increase in the atomic number the atomic radius moving from left to right across a period.?
decreases
What increases down a group and decreases across a period?
Atomic radius
What is the trend in atomic size across the period from sodium to argon?
across a period, the atomic size decreases as the effective nuclear charge increases.
How does atomic radius vary in group and in period on periodic table?
Down a period the atomic radius increases as the number of shells (or energy levels) increases. Across a period the atomic radius decreases as the effective nuclear charge increases.
How does size change in a period and in a group?
Atomic size decreases across a period as the effective nuclear charge increases. Atomic size increases down a group as the energy level (shells) increases.
What is one way atomic radius can be defined?
idk if this is an answer but this is what i found in my book. atomic raduis increases down a group and decreases across a period
What decreases across the periodic table?
Atomic size decreases across a period
Atomic size generally as you go down a group?
Atomic size generally increases as you go down a group
What happens to the atomic radius as you go across a period?
It decreases as you move from left to right because there is an increase in positive charge in the nucleus as you go from left-to-right. Each time you go over an element it has one more electron and proton added to the principal energy level, so the nucleus pull increases and it holds the valence electron in tighter.
Why does atomic size increase from left to right across a period?
atomic size decreases across a period
What does atomic radius do across a period?
It decreases.
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 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
