Second and successive electron affinity of an element

Question

Second and successive electron affinity of an element (A) is always successive (energy is released) (B) is always positive (energy is absorbed) (C) can be positive or negative (D) is always zero

Tardigrade Admin · Accepted Answer

O(g)+e- xrightarrow[-E A1] O ominus(g)+e- xrightarrow[+E A2] O(g)2- Energy is required to add an electron to the negatively charged species due to electron-electron repulsion.

Q. Second and successive electron affinity of an element

is always successive (energy is released)

is always positive (energy is absorbed)

can be positive or negative

is always zero

$O_{(g)} + e^{-} - E A_{1} O^{⊖} (g) + e^{-} + E A_{2} O_{(g)}^{2 -}$
Energy is required to add an electron to the negatively charged species due to electron-electron repulsion.

Q. Second and successive electron affinity of an element

is always successive (energy is released)

is always positive (energy is absorbed)

can be positive or negative

is always zero

O(g)​+e−−EA1​​O⊖(g)+e−+EA2​​O(g)2−​ Energy is required to add an electron to the negatively charged species due to electron-electron repulsion.

$O_{(g)} + e^{-} - E A_{1} O^{⊖} (g) + e^{-} + E A_{2} O_{(g)}^{2 -}$
Energy is required to add an electron to the negatively charged species due to electron-electron repulsion.