In general, the properties that decrease and increase down a group in the periodic table,
Question:

In general, the properties that decrease and increase down a group in the periodic table, respectively, are:

  1. atomic radius and electronegativity.

  2.  electron gain enthalpy and electronegativity.

  3. electronegativity and atomic radius.

  4. electronegativity and electron gain enthalpy.


Correct Option:

Solution:

Generally, electronegativity decreases down the group as the size increases. This can also be formulated as:

Electronegativity $=\frac{1}{\text { size }}$

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