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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.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThe atomic numbers increase from left to right.
Wiki User
∙ 12y agoAs you go from left to right, the elements become less metallic and more nonmetallic.
Wiki User
∙ 12y agoWiki User
∙ 8y agoThe number of protons is called the atomic number. It increases from left to right.
Wiki User
∙ 9y agoThe atomic number increases as one go across the periodic table.
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How do atomic numbers and atomic masses increase in the periodic table?
The atomic number and atomic masses increase as you move from left to right.
Boron is one block to the left of carbon in the periodic table the atomic number of carbon is 6 the atomic number of boron is?
The atomic number of boron is 5, one less than the atomic number of the atom in the block to its immediate right.
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.
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.
Why does the change for the atomic radii of elements in period 3 from sodium to argon look similar to period 2?
Because the trend is the same. Atomic radius decreases from left to right across a period.
How does the atomic number change in a period?
When going left to right across a period, the atomic number of element increases.
How the atomic number properties generally change as you go from left to right in the periodic table?
The atomic number properties generally change as you go from left to right in the Periodic Table by increasing 1 each element.
What trends do you notice about the atomic number and atomic mass as you move left to right across the periodic table?
The atomic number increases from left to right. The atomic number also increases.However, there are few exceptions for atomic mass.
Is the atomic number 10 to the right or left of the atomic number 9?
It is in the same direction of reading: left (9) lower, right (10) higher
What occurs as you move from the left to the right on the periodic table?
Many properties change as you move from left to right on the periodic table. For example: atomic number increases; electronegativity increases; atomic radii decrease etc. etc.
What trends do you notice about the atomic number and atomic mass as you move left to right across the table?
they increase by one going from left to right totally a guess
When looking across a period of the periodic table from left to right when happens to the atomic number and electronegativity?
As you move from the left to right, the atomic number increases. Also, the electronegativity increases.
How does the atomic number change as you move left or right of the periodic table?
left to right - increases (by 1s)right to left - decreases (by 1s)top to bottom - increases (big steps)bottom to top - decreases (big steps)
How does the atomic number change across a column of the periodic table?
Columns are vertical, so you are referencing a group of elements. The atomic number increases as you descend from top to bottom. Rows are horizontal, which references the periods. The atomic number increases as you go from right to left.
An increase in the atomic number the atomic radius moving from left to right across a period.?
decreases
How do atomic numbers and atomic masses increase in the periodic table?
The atomic number and atomic masses increase as you move from left to right.
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
