Which halogen has highest electron affinity?

Therefore, chlorine has a higher electron affinity than fluorine, and this orbital structure causes it to have the highest electron affinity of all of the elements.

What is the trend of electron affinity in the periodic table?

Electron affinity generally increases across a period in the periodic table and sometimes decreases down a group. These trends are not necessarily universal. The chemical rationale for changes in electron affinity across the periodic table is the increased effective nuclear charge across a period and up a group.

What is the increasing order of electron affinity of halogens?

Therefore, the correct order of electron affinity is Cl > F > Br.

Do halogens have high or low electron affinity?

The halogen will have the highest electron affinity, while the noble gas will have the lowest electron affinity.

What element has highest affinity?

Chlorine has the highest electron affinity among the elements. Its high electron affinity can be attributed to its large atomic radius, or size. Because chlorine’s outermost orbital is 3p, its electrons have a large amount of space to share with an incoming electron.

Which halogen has the smallest electron affinity?

Astatine has the lowest ionization energy, electron affinity, and electronegativity of all the halogens.

Why is Cl more EA than F?

Chlorine has higher electron affinity than fluorine because the atomic radius of Chlorine is larger than fluorine because of more electrons . So, the tendency to lose it’s electrons also increase .

Why electron affinity of halogens are very high?

The atomic size of halogens is very small. The smaller the atomic size , the greater the electron affinity , because the effective attractive force between the nucleus and the valence electrons is greater in smaller atoms , and so the electrons are held firmly.

How can the electron affinity trend in the periodic table?

As the name suggests, electron affinity is the ability of an atom to accept an electron. Unlike electronegativity, electron affinity is a quantitative measurement of the energy change that occurs when an electron is added to a neutral gas atom.

Why do halogens have a high electron affinity?

The Electron Affinity can be thought of as the “electrical advantage” given by adding an electron to an atom. So, if you have a halogen that gains an electron, it becomes more stable because now it has its octet, orbitals filled, etc. This is why the 1st EA is large.

What are the periodic trends of the halogen group?

The periodic trends observed in the halogen group: Melting and Boiling Points (increases down the group) The melting and boiling points increase down the group because of the van der Waals forces. The size of the molecules increases down the group.

Which is the element with the highest electron affinity?

Number of protons and size of atom: Halogens are smaller atom compared to other elements in same horizontal lines in the modern Periodic table. As fluorine sits atop chlorine in the periodic table, most people expect it to have the highest electron affinity, but this is not the case.