0
Your question is incorrect. It should be increases rather than decreases. Well it is the proton number (Z) that increases.
What else can I help you with?
Why does atomic size increase from left to right across a period?
atomic size decreases across a period
Atomic radius _moving from left to right across a period?
Decreases
What are the elecronegativity trends seen in the periodic table?
On the Periodic Table of elements, electronegativity increases as you move left to right across a period.
Does electropositivity increases or decreases as you move left to right across a period on the periodic table?
Electropositivity decreases along a period. The metallic character also decreases.
What happen if you move left to right a across a periodic table in metals?
Across a period the metallic character decreases
How does the atomic radius vary in a period?
Atomic radius decreases across a period from left to right, except for the noble gases.
How does the atomic radius change from the left to the right horizontal row in the periodic table?
The atomic radius decreases from left to right across a period in the periodic table. This is due to the increasing number of protons in the nucleus, which pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.
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.
As you go from left to right across a period the first ionization energy generally decreases or increases?
increases.
An increase in the atomic number the atomic radius moving from left to right across a period.?
decreases
What happens to size of atoms while moving across the period?
Atomic Radius Decreases from left to right. From left to right the amount of valence shell electrons increases, maxing out at 8. These valence electrons are pulled by the positively charged nucleus, thus making it smaller from left to right.
How does the reactivity of each group of metals change across the table left to right?
Reactivity of metals decreases from left to right in the specific period of theperiodic table.
