Question

Periodic trends in elements in periodic table at when we go left to right

Answer 1

Answer:

increases

Explanation:

becoz atomic number increases

Answer 2

Answer:

here is ur answer

Explanation:

The electron affinity of an atom can be described either as the energy released by an atom when an electron is added to it, conversely as the energy required to detach an electron from a singly charged anion.The sign of the electron affinity can be quite confusing, as atoms that become more stable with the addition of an electron (and so are considered to have a higher electron affinity) show a decrease in potential energy; i.e. the energy gained by the atom appears to be negative. For atoms that become less stable upon gaining an electron, potential energy increases, which implies that the atom gains energy. In such a case, the atom's electron affinity value is positive. Consequently, atoms with a more negative electron affinity value are considered to have a higher electron affinity (they are more receptive to gaining electrons), and vice versa. However, in the reverse scenario where electron affinity is defined as the energy required to detach an electron from an anion, the energy value obtained will be of the same magnitude but have the opposite sign. This is because those atoms with a high electron affinity are less inclined to give up an electron, and so take more energy to remove the electron from the atom. In this case, the atom with the more positive energy value has a higher electron affinity. As one progresses from left to right across a period, the electron affinity will increase.

Although it may seem that fluorine should have the greatest electron affinity, the small size of fluorine generates enough repulsion that chlorine (Cl has the greatest electron affinity).