{"id":556,"date":"2019-07-08T18:31:03","date_gmt":"2019-07-08T13:01:03","guid":{"rendered":"https:\/\/www.chemtopper.com\/myblog\/?page_id=556"},"modified":"2025-07-18T20:34:43","modified_gmt":"2025-07-18T15:04:43","slug":"variation-electronegativity-periodic-table","status":"publish","type":"page","link":"https:\/\/www.chemtopper.com\/myblog\/variation-electronegativity-periodic-table\/","title":{"rendered":"Periodic Trends of\u00a0\u00a0electronegativity"},"content":{"rendered":"

Meaning of electronegativity and<\/span>\u00a0Periodic Trends of\u00a0\u00a0electronegativity<\/span><\/h2>\n

Two major Factors controlling the electronegativity of\u00a0elements <\/strong><\/span><\/p>\n

in the periodic table :<\/strong><\/span><\/p>\n

1) Size of the\u00a0 element in the periodic table<\/span><\/p>\n

2)Position of element in periodic table means closeness to noble gases.<\/span><\/p>\n

Electronegativity trends part 2 video<\/strong> will\u00a0help you in understanding the variation of\u00a0 electronegativity in periodic table.<\/strong><\/span><\/p>\n

Why electronegativity\u00a0increases along the period?<\/span><\/p>\n

Variation of electronegativity with atomic size in periodic table<\/span><\/p>\n

Change in electronegativity as the metallic character increases or decreases<\/span><\/p>\n

Change in electronegativity as the non metallic character increases or decreases<\/span><\/p>\n

Why halogens are the most electronegative elements of their respective periods in periodic table<\/span><\/p>\n

Which element has the highest value of electronegativity and which element has the lowest value of electronegativity?<\/p>\n

And many many more questions you will be able to answer after watching\u00a0 \u00a0video<\/span><\/p>\n

Trends of Electronegativity in periodic table Part 2<\/strong><\/span><\/p>\n

Why\u00a0 electronegativity\u00a0 decreases down the group and increases across the period?<\/span><\/h2>\n

Smaller the atom<\/strong> higher the electronegativity<\/strong> and bigger the atom lesser is\u00a0 electronegativity<\/strong>.<\/p>\n

Atomic size down the group increases<\/strong> in the periodic table\u00a0And along the period atomic size decreases<\/strong><\/p>\n

So it means electronegativity down the group is decreasing<\/strong> and along the period is increasing<\/strong><\/p>\n

Cesium (Cs) i<\/strong>s considered as biggest atom\u00a0 with least value of electronegativity .<\/strong><\/p>\n

Fluorine (F) i<\/strong>s\u00a0considered as\u00a0 smallest atom with highest value of electronegativity.<\/strong><\/p>\n

Atomic size and periodic trends in electronegativity\u00a0<\/strong><\/span><\/p>\n

\"Big<\/a>
Big atoms are less electronegative than small atoms<\/span><\/strong><\/figcaption><\/figure>\n

Why metals are less electronegative than nonmetals?<\/span><\/h2>\n

What is the basic difference in metals and nonmetals?<\/strong><\/span><\/p>\n

Metals lose electrons to get the nearest noble gas configuration and\u00a0 non metals gain electrons to get the nearest noble gas configuration.<\/span><\/p>\n

Alkali metals are least electronegative and halogens are most electronegative in their respective periods<\/strong><\/p>\n

Metals and non metals :<\/b><\/span><\/p>\n

\"Alkali<\/a><\/p>\n

Size and metallic nature of elements in periodic table\u00a0<\/span><\/h2>\n

Bigger the size of the atom more it has tendency to lose electron because valence electrons are more away from the nucleus and less tightly held. Hence less energy is required to remove electron and atoms become more metallic in nature.<\/p>\n

Size and Non -metallic nature of elements in periodic table\u00a0<\/strong><\/p>\n

Smaller the size of the atom less it has tendency to lose but more tendency to gain electrons because valence electrons are close to the nucleus and more tightly held by the nucleus .Hence it becomes easy to add an\u00a0 electron and atoms become more non metallic in nature.<\/p>\n

\"Electronegativity
http:\/\/Periodic Trends of\u00a0\u00a0electronegativity<\/a><\/figcaption><\/figure>\n

Electronegativity ,metallic and non metallic character<\/strong><\/h2>\n

Variation of metallic character and electronegativity in periodic table down the group and along the period :<\/strong><\/p>\n

Down the group <\/strong>—>atomic size increases\u00a0 —-> <\/strong><\/span>\u00a0 Metallic character\u00a0 increases.\u00a0 –>Electronegativity\u00a0 decreases \u00a0\u00a0\u00a0<\/strong><\/span><\/p>\n

Along the period–> atomic size decreases–><\/span><\/strong>\u00a0 Metallic character decreases\u00a0 –>Electronegativity increases.<\/span><\/strong><\/p>\n

Now you can answer Why alkali metals are the least electronegative elements of their respective periods in periodic table?<\/span><\/p>\n

Periodic Trends of\u00a0\u00a0electronegativity\u00a0<\/span> and Closeness to the Noble gases<\/span><\/strong><\/h2>\n

Nonmetals closest<\/strong>\u00a0to Noble gases<\/strong> are the most electronegative<\/strong> and metals closest to Noble gases <\/strong>are the least electronegative.<\/strong><\/p>\n

Very\u00a0<\/strong><\/span>reactive nonmetals halogen and very reactive metals alkali metals are\u00a0<\/strong><\/span>closest to the noble gases.<\/strong><\/span><\/p>\n

Metals are less electronegative and non metals are more electronegative.<\/strong><\/p>\n

Halogens<\/strong> are most electronegative<\/strong> in their respective periods as they are\u00a0 smallest in size in their respective periods and closest to noble gases also.<\/span><\/p>\n

Alkali metals are least electronegative in their respective periods as they are\u00a0 biggest\u00a0\u00a0in size in their respective periods and closest to noble gases also.<\/span><\/p>\n

<\/div>\n

\"Metals<\/a><\/p>\n

\u00a0<\/span><\/p>\n

Watch the video\u00a0<\/span>Trends of\u00a0\u00a0electronegativity with atomic size and position in the periodic table (EN part 2 )\u00a0<\/span><\/strong>for understanding the reasoning behind electronegativity trends in the periodic table.<\/span><\/p>\n

Periodic Trends of\u00a0\u00a0electronegativity with atomic size and position in the periodic table (EN part 2 )<\/span><\/h2>\n