Question

On moving down the group gradually increase
(A) Oxidising property
(B) Electronegativity
(C) Acidic property
(D) Metallic property

Answer 1

Hint: In this question, we need to identify which property gradually increases when we go down the group in the periodic table and give a reason for the same. There are many properties that increase down the group but here we have to identify the one which is present in the four options given above.

Complete Step by Step Solution:
Metallic character basically indicates the reactivity level of the element. Metals tend to lose electrons in chemical reactions. Metallic character is the tendency of an element to lose electrons and form positive ions or cations. Alkali metals are the most electropositive elements.
The non-metallic character is the tendency of an element to gain electrons and form negative ions or anions. Chlorine and Oxygen are the most electronegative elements.
The metallic character of the elements increases as we go down the group in the periodic table. This is because as we go down the group atomic radii of atoms increase due to an increased number of shells. Hence, electrons become easy to lose as there is less attraction between the nucleus and the valence electrons because of the increased distance between them.
Some of the elements with the highest metallic properties are Francium, Cesium, Sodium, Copper, etc.
Hence, the correct answer is (D).

Note: This question is taken from the inorganic part of Chemistry. This branch of chemistry is concerned with the properties and behavior of inorganic compounds, which include metals, minerals, and other organometallic compounds.