Question

What is the correct order of electron gain enthalpy of 16 elements & Why?

Answer 1

Answer:

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).

Explanation:

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Answer 2

The correct increasing order of the electron gain enthalpy of the group 16 elements is given as Oxygen<Sulphur <Selenium<Tellurium.

Explanation: The electron gain enthalpy of oxygen is the highest and the electron gain enthalpy of Tellurium is the lowest among the elements of group 16 as:

• The electron gain enthalpy decreases with an increase in the size of the atom.
• The size of atoms of group 16 elements increases down the group. Therefore, the electron gain enthalpy of group 16 elements decreases down the group.
• Oxygen is the first element of group 16 and Tellurium is the last element.
• Also, it is important to note that the electron gain enthalpy of oxygen is less than that of sulphur it is due to the compressed atomic structure of oxygen that helps in the repulsion of the valence shell electron and other approaching atoms.
• The elements of group 16 of the periodic table are also known as chalcogens.