Most electronegative element are Fluorine.
What are Electronegativity?
The tendency of an atom in a molecules to attract the shared pair of electrons towards itself is know as electronegativity.
It is just shifting of the share pair of electrons towards itself that is known as electronegativity.
It is depends upon the size and nuclear charge. small the size, higher would electronegativity.
Electronegativity value increases, from left to right in periodic table. If the electropositive value decreases from down in periodic table.
As more across a periodic from left to right, the nuclear charge increases and atomic size decreases.
The value of electronegative increases acrocess a period in the periodic table.
The nuclear charge also increases but the effect of the increases in nuclear charge overcome by the addition of one shell.
Hence, the value of electronegativity decreases as we more down the group.
As we more the group from fluorine to astaline the electronegative value decreases.
You know that, metals show a lower value of electronegative as compare to the Nonmetals.
Metals are electropositive in nature whereas, Nonmetals are electronegative in nature.
The Most electronegative element in the periodic table is?
The most electronegative element in the periodic table is fluorine.
Fluorine is a chemical elements with the symbols F with atomic no 9. it is pale yellow diatomic gas.
It is most electronegative reactive elements. this element fluorine is one type of gas.
Fluoride are also uses to toothpaste to prevent dental cavities.
Least electronegative element in the periodic table is?
Least electronegative element in the periodic table is cesium.
Cesium (Cs) is a chemical element with atomic no 55 it discovered by fuster kirchhoff and robert bunsen in the year 1860.
It is soft, it is look like gold type alkali elements that is quickly attached by air and react fast with water. the density of cesium, is very high. such as, cesium, chloride. It is windely uses in moleculer biology. but cesium is not harmful to life.
Top 10 most electronegative element
Yes it is absolutely correct, the 10 different most electronegative element are in the periodic table starting (first column) with the top of periodic table.
This is the most electronegative elements on the periodic table starting with the most electronegative on the top.
And decreasing in electronegativity as we work down. So we have top 10 most electronegative elements such as, fluorine, oxygen, nitrogen, chlorine, bromine, iodine, sulfur, carbon, and hydrogen.
Alkali metals have a Noble gas, ns1 electron configuration.
The alkali metals is in first column of the periodic table.
According to first column of the periodic table, Alkali elements are,
- Potassium (K),
- Rubidium (Ru),
- Cesium (Cs) and
- Francium (Fr)
Why the hydrogen is not considered alkali metals?
The main reason hydrogen (H) is not considered as an alkali metal is that it is mostly found as a gas when the temperature and pressure are normal. Hydrogen can show properties or transform into an alkali metal when it is exposed to extremely high pressure.
Characteristics of alkali metals
The characteristics of alkali metals are,
(1) Low melting point.
(2) Low ionization energy.
(3) Low electronegativity value.
(4) Low densities.
(5) Alkali metals are highly reactive.
(6) React easily with halogens.
What is the Difference Between Electronegativity and Electropostivity?
Actully in simple words, the main difference is this that,
Electropositivity is called, the ability to lose electrons, as a results, it form cations, whereas electronegative refers to the ability to gain electrons, it form anions.
Electropositivity – The Tendency of an atom of an element to lose one or more electrons to form a positively charged ion, that is called electropositive element. and Electropositivity decreases along a period and increases on moving down the group.
Electronegativity – The tendency of an atom of an element present in a molecule to gain electrons, or attract shared electron pair or more towards itself is called electronegativity.
Electronegativity increases along a period and decreases on moving down the group.
Top 10 electronegative elements and decreasing order
The top 10 electronegative element are,
The most electronegative element are – Top in periodic table.
The Least electronegative element are – down in periodic table.
Decreasing order of electronegative elements
F > O > N > C – Decreasing from top to bottom.