Question

The most active element in the metallic part is found in:
(A) The upper right corner of the periodic chart
(B) The upper left corner of the periodic chart
(C) The lower-left corner of the periodic chart
(D) The lower-left corner of the periodic chart
(E) The middle of the periodic chart, just beyond the transition elements

Answer 1

Metallic elements: The elements which are having metallic properties are called metallic elements. They are electropositive in nature. That is they give up their electrons.

Complete Solution :
- There are 18 groups and 7 periods in the periodic table. The reactivity of the elements varies in groups and periods.
- Reactivity of any element depends upon the ease with which it can gain or lose electrons. So, a particular element in the entire periodic table cannot be referred to as the most reactive.
- The reactivity increases from left to right and bottom to top. Accordingly, Group IA and Group IIA elements are the most reactive.
- In the metal reactivity series, lithium is considered to be the most reactive metal and gold the least. Thus, gold is the most inert metal.
- Hence, we can say that the most active element in the metallic part is found in the lower-left corner of the periodic chart.
So, the correct answer is “Option D”.

Additional Information:
Active metals: These are metals which are highly electropositive and lose electrons very easily. For example, Lithium, sodium, potassium, etc

Note: The possibility to make a mistake is you may choose option A. As we know that the reaction decreases from left to right and top to bottom So, the right corner elements are not active metals as compared to left corner elements.