What is electron affinity of halogen?

Hence, the correct order of electron affinity for the halogens is (A) F < Cl > Br > I. Note: Remember that chlorine has the highest electron affinity in the modern periodic table. As electron affinity increases along a period, so the group 17 elements have the highest electron affinity.

Which halogen has highest electron affinity?

chlorine
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.

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.

Does Group 7 have high electron affinity?

Periodic Trends in Electron Affinity Atoms, such as Group 7 elements, whose anions are more stable than neutral atoms have a higher Eea. The electron affinities of the noble gases have not been conclusively measured, so they may or may not have slightly negative values.

Why do halogens have very high value of electron affinity?

The high electron affinities of the halogens are a result of their small size, high effective nuclear charge and having an almost complete outer shell of electrons. High energy is released when an electron is added to an halogens showing very high electron affinity.

Which of the following is correct for electron affinity of halogens?

For the electron affinity of halogens (with -ve sign), which of the following is correct? Electron affinity of fluorine is more than iodine.

Why do halogens have high electron affinity?

The high electron affinities of the halogens are a result of their having an almost complete outer shell of electrons. Because of this overall attraction, energy will be released when the electron is captured by the fluorine atom. Similar reasoning also explains why oxygen also has a high electron affinity.

Which of the following halogens has the zero electron affinity?

Hence, an element that has zero electron affinity is Neon.

Do halogens have electron affinity?

Electron affinity reflects the ability of an atom to accept an electron. Group VIIA elements, the halogens, have highest electron affinities because the addition of an electron to an atom results in a completely filled shell.

Do halogens have positive electron affinity?

Electron affinities are negative numbers because energy is released. The elements of the halogen group (Group 17) gain electrons most readily, as can be seen from their large negative electron affinities. This means that more energy is released in the formation of a halide ion than for the anions of any other elements.

What are group 7 halogens?

The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table . Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals.

Why do halogens have the highest electron affinity?

Why are halogens the most negative electrons in the periodic table?

Each halogen atom can acquire a stable configuration of the type ns2 np6 similar to that of a noble gas by gaining an electron. Therefore, halogens have very strong tendency to accept the added electron. This is why electron affinity values for halogens are the most negative in the periodic table.

Which is the element with the highest electron affinity?

Electron affinity increases towards the top of the periodic table and towards the right. Thus, the top right elements (except for the noble gases) have the highest electron affinities – the greatest energy released when an electron is added. 2. What is the lowest electron affinity?

What kind of electron affinity does Group 2 have?

Electron affinity of the noble gases and the elements of group 2 are large positive. Noble gases possess very stable electronic configurations (He 1s2 , others; ns2 np6). Similarly, elements of group 2 (Be, Mg, Ca etc.) also possess stable configuration of the type ns2.

What are the periodic trends in electron affinity?

However, some general trends have been observed. Let us look at what are the observed periodic trends in Electron Affinity. In general, electron affinity values becomes more and more negative on moving from left to right in a period.