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Your question is incorrect. It should be increases rather than decreases. Well it is the proton number (Z) that increases.
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∙ 11y ago
Wiki User
∙ 9y agoWiki User
∙ 7y agoThe atomic number increase down in a group; atomic radius increase in the groups 1-5 and 12-17.
Wiki User
∙ 11y agoatomic radius
Wiki User
∙ 12y agoionic radius
Wiki User
∙ 6y agoThe atomic number increase.
Agbor Taku
The atomic radius reduces
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How does electronegative change going down and across the periodic table?
Electronegativity increases across (left to right) the periodic table and decreases on going down.
What property increases going down a group in periodic table?
Atomic size, number of shells (or energy levels) and electropositivity increases down a group on the periodic table.
What trend is generally observed in electronegativity going across the periodic table from left to right?
From left to right and into the upper corner of the periodic table electronegativity increases. Fluorine is the most electronegative element, but the elements in group 18 generally have no electronegativity at all.
What trend does the first ionization follow going across the periodic table?
As you travel to the right, it increases
What is the trend of thermal stability in periodic table?
it increases
How does electronegative change going down and across the periodic table?
Electronegativity increases across (left to right) the periodic table and decreases on going down.
What property increases going down a group in periodic table?
Atomic size, number of shells (or energy levels) and electropositivity increases down a group on the periodic table.
What are the energy levels doing on a periodic table when going from top to bottom?
the energy level increases as we move from top to bottom in the periodic table
How does electronegative change going down and across the table?
Electronegativity increases across (left to right) the periodic table and decreases on going down.
What trend is generally observed in electronegativity going across the periodic table from left to right?
From left to right and into the upper corner of the periodic table electronegativity increases. Fluorine is the most electronegative element, but the elements in group 18 generally have no electronegativity at all.
What trend does the first ionization follow going across the periodic table?
As you travel to the right, it increases
Do you lose electrons going left to right on the periodic table?
No, the number of electrons increases as you move to the right.
How do elements change going down the periodic table?
Down a group, the atomic number generally increases, size increases, ionization energy decreases, reactivity increases.
What sub atomic particle increases as you move to the right across the periodic table?
Electronegativity increases as you move across the periodic table from left to right.
What happens to the atomic radius as you move down the periodic table?
Down a group, the atomic radius increases as the number of shells or energy levels increases.
What type of elements tend to have low ionization energies?
The elements in the lower right part of the Periodic Table. Cs, Fr, Ra, Ba etc.
What is the trend of thermal stability in periodic table?
it increases
