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.
The atomic numbers increase from left to right.
As you go from left to right, the elements become less metallic and more nonmetallic.
The number of protons is called the atomic number. It increases from left to right.
The atomic number increases as one go across the periodic table.
The atomic number and atomic masses increase as you move from left to right.
The atomic number of boron is 5, one less than the atomic number of the atom in the block to its immediate right.
Atomic radius usually decreases from left to right across a period of 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.
Because the trend is the same. Atomic radius decreases from left to right across a period.
When going left to right across a period, the atomic number of element increases.
The atomic number properties generally change as you go from left to right in the Periodic Table by increasing 1 each element.
The atomic number increases from left to right. The atomic number also increases.However, there are few exceptions for atomic mass.
It is in the same direction of reading: left (9) lower, right (10) higher
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.
they increase by one going from left to right totally a guess
As you move from the left to right, the atomic number increases. Also, the electronegativity increases.
left to right - increases (by 1s)right to left - decreases (by 1s)top to bottom - increases (big steps)bottom to top - decreases (big steps)
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.
decreases
The atomic number and atomic masses increase as you move from left to right.
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