Question

Increasing order of electron gain enthalpy of group 16

Answer 1

Electron gain enthalpy:

When an extra electron is added to an atom, energy is released.

• The amount of energy released while converting a neutral gaseous isolated atom into a negatively charged gaseous ion(anion) by the addition of electron is called Electron affinity (E.A) or Electron Gain Enthalpy.
• EQUATION:

x(g) + e- ----> x-(g) +E.A.

• x is any element taken in its gaseous state.

• Unit: electron volts per atom

(eV/atom) or kJ mol-^1 .

• Electron affinity is represented by negative sign[-] e.g.,

Cl(g) +e- ---->Cl-(g)+349KJ/mol.

Therefore, electron affinity of chlorine is

-349KJ/mol.

Electron affinity or Electron Gain Enthalpy, from left to right in a horizontal row of the periodic table (period), increases.

From moving top to bottom in a group decreases.

So,here it is asked about the increasing order of Electron Gain Enthalpy of group 16 .

Here it is:

Lv(Livermorium),Po(Polonium),

Te(Tellurium),SE(Selenium),S(Sulphur),O(Oxygen).

HOPE IT'S CLEAR^_^

Answer 2

Answer:

s>se>Te>po>O (or) s>se>Te>O