As you move from left to right across the Periodic Table, electronegativity increases, and as you move down the table electronegativity decreases.
"Electronegativity"
The trend for first ionization energy
going down a group, electronegativity decreases going across a period, electronegativity increases
As you move from left to right across the periodic table, electronegativity increases, and as you move down the table electronegativity decreases.
Yes, as you move from left to right across the period.
First ionization energy has a trend similar to that of electronegativity.
The electronegativity trend and the first ionization energy trend both increase as you move from left to right across a period in the periodic table due to the increasing effective nuclear charge. Higher electronegativity indicates a stronger pull on electrons, making it harder to remove an electron, thus increasing the first ionization energy.
Electronegativity is the ability for an atom to attract electrons. It is expressed in numeric values in Paulings (a unit named after a chemist). On the periodic table it increases from left to right across a period. It decreases down a group on the periodic table.
metallic character decreases, and electronegativity increases
The trend as you move from left to right across a period in the periodic table, the electronegativity increases due to the stronger attraction that the atoms obtain as the nuclear charge increases. Moving down a group, the electronegativity decreases due to the longer distance between the nucleus and the valence electron shell, thereby decreasing the attraction, making the atom have less of an attraction for electrons or protons.
The trend for first ionization energy
Electronegativity generally increases from left to right across a period and decreases down a group in the periodic table. This trend occurs because elements on the right side of the periodic table have a greater ability to attract electrons due to increased nuclear charge and effective nuclear charge.