Electronegativity is the tendency of an atom to attract electrons. Many elements have to be taken into account when comparing the electronegativity of different groups. In particular, Group 1 and group 7. Something that you need to remember is the "shielding effect" of the atoms. The more shells surrounding an atom, the greater the shielding effect.
Also, the number of electrons currently occupying the outermost shell can have an effect. For example, the group 1 element Lithium has 1 electron in its outer shell, as all group 1 elements do, and group 7 elements have 7 electrons in their outer shells. However, the difference between say lithium and potassium is that potassium has 3 shells, whereas lithium has only 1. This means that Lithium has a higher electronegativity. This is because it has a smaller shielding effect from less shells, and therefore attracts electrons faster. The best thing to remember here is that group 1 has an increasing electronegativity going up the group.
Unfortunately, i cant remember how group 7 works, but i believe it is opposite to group 1, so you'll have to carry out more research!
Electronegativity increases from left to right and decreases from top to bottom on the periodic table.
Electronegativity generally increases from left to right across a period and decreases from top to bottom down a group on the periodic table. This means that elements towards the top right of the table have higher electronegativity values compared to elements towards the bottom left.
Rb has lower electronegativity than Na. Electronegativity decreases as you move down a group in the periodic table, so Rb, which is located below Na in the periodic table, has lower electronegativity.
Electronegativity generally decreases as you go down a group on the periodic table due to the increasing distance between the nucleus and valence electrons, reducing the attractive force. Across a period, electronegativity generally increases due to the increasing nuclear charge, pulling valence electrons closer and increasing their attraction.
From left to right and into the upper corner of the periodic table electronegativity increases. Fluorine is the most electronegative element, but the elements in group 18 generally have no electronegativity at all.
Electronegativity increases from left to right and decreases from top to bottom on the periodic table.
Electronegativity is not found on the Periodic Table of the Elements.
Electronegativity is highest in the top right corner of the periodic table, with fluorine being the most electronegative element. Electronegativity decreases as you move down and to the left on the periodic table.
electronegativity represents the size of an atom
Electronegativity generally increases from left to right across a period and decreases from top to bottom down a group on the periodic table. This means that elements towards the top right of the table have higher electronegativity values compared to elements towards the bottom left.
On the Periodic Table of elements, electronegativity increases as you move left to right across a period.
electronegativity
Fluorine
In the right corner of the periodic table.
As you move from left to right across the Periodic Table, electronegativity increases, and as you move down the table electronegativity decreases.
As you move from left to right across the periodic table, electronegativity increases, and as you move down the table electronegativity decreases.
Flourine