As you go across a period from left to right, electronegativity increases, ionization energy increases, and atomic radius decreases. In order for energy to increase, radius must decrease. As you go up and down a period, electronegativity decreases, ionization energy decreases, and atomic radius increases.

The higher the electronegativity of an atom, the greater its ability to attract shared electrons. The electronegativity of atoms increases as you move from left to right across a period in the periodic table. The electronegativity of atoms decreases as you move from top to bottom down a group in the periodic table.

From top to bottom down a group, electronegativity decreases. This is because atomic number increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.

Electronegativity means tendency to attract electron,along the period atomic size decreases,atomic size decreases means there is more attraction of nucleus towards electron,more attraction of nucleus means there is more positive charge,and more positive charge means there is more tendency to attract electron.

Across a period from left to right the electronegativity of atoms increases. As you move from left to right across the periodic table, atoms have a greater nuclear charge and a smaller covalent radius. This allows the nucleus to attract the bonding electrons more strongly.

Electronegativity is a property that describes the tendency of an atom to attract electrons (or electron density) toward itself. An atom’s electronegativity is affected by both its atomic number and the size of the atom. The higher its electronegativity, the more an element attracts electrons.

Down a group, the electronegativity decreases. Across a period, it increases.

As the atomic number increases along a row of the periodic table, additional electrons are added to the same, outermost shell. The radius of this shell gradually contracts as the attraction between the additional electrons and the nucleus increases.

An atom’s electronegativity is affected by both its atomic number and the size of the atom. The higher its electronegativity, the more an element attracts electrons.

Questions and Answer Based on the Periodic Table

Electronegativity increases across a period and decreases down a group. Towards the left of the table, valence shells are less than half full, so these atoms (metals) tend to lose electrons and have low electronegativity.

You can get the electronegativity order from the periodic table of elements. From left to right, the electronegativity will also increase. From top to bottom, it will decrease.

The trends for electronegativity is that the value increases across the periods (rows) of the periodic table. The electronegativity also increases up a group (column) of the periodic table.

Periodic table is arranged and organized with special pattern or regular variation of the properties of an element with increasing atomic number, this is called periodic trend. So periodic trend look like a repeating pattern on the periodic table. Some of the trends are density, atomic radius,melting point, boiling point, electronegativity etc.

Explanation: Fluorine is the most electronegative element on the periodic table, with a whopping electronegativity of 3.98. That makes it extremely reactive, and fluorine will react with almost any compound/element, if not all elements to form compounds and other complex molecules.