Why chlorine is more electron affinity than fluorine?

Why chlorine is more electron affinity than fluorine?

the electron affinity of the fluorine is less than chlorine because the size of fluorine is too small as size decreases from left to right inside period, whereas chlorine has a larger size to accommodate electrons hence electron affinity of chlorine is more than fluorine.

Why chlorine has highest electron gain enthalpy?

It is due to small size of fluorine atom. As, there are strong inter electron repulsion in the relatively small 2P orbits of fluorine and thus, the incoming electron does not experience much attraction. Therefore chlorine has the electron gain enthalpy than the fluorine.

Why is Cl more electronegative than F?

The assertion states that Fluorine is more electronegative than Chlorine. The reason states that Fluorine has higher electron affinity than Chlorine. Since fluorine has a very small atomic radius, it exerts a repulsive force on any incoming electron. Therefore, Chlorine has a higher electron affinity than Fluorine.

Why does oxygen have a lower electron affinity than fluorine?

As you might have noticed, the first electron affinity of oxygen (-142 kJ mol-1) is less than that of fluorine (-328 kJ mol-1). That means that the net pull from the nucleus is less in Group 6 than in Group 7, and so the electron affinities are less.

Why 2nd electron gain enthalpy of oxygen is positive?

When an electron is added to an isolated oxygen atom, it becomes uninegative ion. Now if one more electron has to be added, then it will experience a repulsive force or columbic force of repulsion. Therefore , the second electron gain enthalpy is positive for oxygen.

Which element has the lowest electron affinity in oxygen family?

So, out of the given elements to us, nitrogen has the lowest electron affinity. Hence, the correct option is (A) Nitrogen. Note: As the atomic size decreases from left to right across the period and increases down the group electron affinity increases across the period and decreases down the group.

Which halogen has the smallest electron affinity?

astatine

Why does group 16 have low electron affinity?

Answer. Explanation: because oxygen is one of the most electro negative element. So lowest NEGATIVE electron affinity is of oxygen.

Which chalcogen element has least negative electron gain enthalpy?

oxygen

Which Chalcogen has highest electron gain enthalpy?

Oxygen

Which element has the lowest gain enthalpy?

What does Group 16 react with?

Chemical Properties The group sixteen elements react with hydrogen to form hydrides of the sort H2E, where E could be any element- oxygen, sulfur, selenium, tellurium or polonium.