Why does oxygen have more electron affinity than nitrogen?

This happens because effective nuclear charge, which is a measure of what the net positive charge felt by the electrons is, increases. This implies that the atomic size of carbon will be a little bigger than that of nitrogen, which in turn will be a little bigger than that of oxygen.

Which has greater electron affinity oxygen or nitrogen?

Electron affinity of oxygen is less than that of fluorine but greater than that of nitrogen.

Why is nitrogen an exception to electron affinity?

Nitrogen has half filled 2p orbital which is very stable. Thus,nitrogen have no electron affinity.

Why is a nitrogen atom larger than Oxygen?

Nitrogen’s atomic radii is larger than both Oxygen and Fluorine because when you move from left to right in a period the number of protons increase but since the shell number remains the same the effective nuclear charge on the outer most/ valence electrons increases which try to exert more force to pull the electrons …

Why nitrogen has less electron affinity than phosphorus?

This means phosphorus has more occupied electron shells than nitrogen. So nitrogen will have a smaller atomic radius. This means the electrons are closer together. So, the reason that the change in energy for both electron affinities is lower for atoms of phosphorus than for atoms of nitrogen is answer choice (B).

Why is a nitrogen atom larger than oxygen?

Why does nitrogen have a lower electron affinity when compared to carbon than would be expected by the trend?

Electron affinity decreases or increases across a period depending on electronic configuration. This occurs because of the same subshell rule that governs ionization energies. Since a half-filled “p” subshell is more stable, carbon has a greater affinity for an electron than nitrogen.

Why nitrogen is smaller than oxygen atom?

Each oxygen atom has 8 protons in its nucleus, while each nitrogen atom has only 7 protons in its nucleus. Thus, the overall size of the electron cloud of the O2 molecule is smaller than for N2, in part because its electron cloud is drawn in closer to the O nuclei by the greater positive charge on the O nuclei.

Which is smaller oxygen or nitrogen?

As we move from left to right in the periodic table, the atomic radius of elements keeps on decreasing. Thus, the atomic radius oxygen should be less than that of nitrogen. But the atomic radius of oxygen is slightly more than that of nitrogen.

Which has lowest electron affinity nitrogen or phosphorus?

Nitrogen has greater electron affinity than phosphorus .

Why nitrogen has positive electron gain enthalpy?

Nitrogen has stable half filled configuration and therefore it has no tendency to accept electron therefore, energy has to be supplied in order to add an electron to it. Thus, nitrogen has positive electron gain enthalpy.

Why the size of oxygen is greater than nitrogen?

Oxygen has eight electrons in its shells. The eight protons in oxygen atom’s nucleus will exert more force than nitrogen’s seven electrons. Also, oxygen has same number of shells as nitrogen. Thus electrons in oxygen atom will be closer to nucleus than in the case of nitrogen.

Why is the electronegativity of nitrogen higher than oxygen?

As nitrogen electronic confriguration contains stable half filled 2p3 nd it will not withdraw any electron nd be in its stable state whereas oxygen has 2p4 which is not a stable confriguration so oxygen has greater tendency to withdraw bonded electrons towards itself resulting greater electronegativity.

What is the difference between nitrogen and oxygen?

Whereas Nitrogen is a very stable gas and does not combine easily with other gases, oxygen is very active and is in thousands and thousands of compounds. When chemists found compounds, they were almost always compounds with oxygen in them, often in combination with silicon or carbon.

Why does nitrogen have zero electron effinity?

Nitrogen has five electrons in its valence shell and when electron approaches to Nitrogen then electron loses half of its energy to exist in valence shell and then half of its remaining energy uses to dominate the repulsion of valence electrons . So net energy loss is zero . That is the reason Nitrogen has approximately zero Electron Effinity .

Why is the electron affinity for oxygen positive?

Because the effective nuclear charge overpowers this repulsion, and energy is being released when an electron is being added to oxygen, hence the electron affinity will be positive.