Question

The most active metals on the periodic table are found on the: lower left upper right middle upper left lower right

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

Elements which are most electropositive or electronegative are the most reactive in nature. Therefore, they are active.

Elements of group 1 are also known as alkali metals. Elements of group 1 are lithium, sodium, potassium, rubidium, cesium, and francium.

All these are highly electropositive in nature and thus, are active. These are placed at the top left column of periodic table.

Thus, we can conclude that out of the given options, the most active metals on the periodic table are found on the lower left.

Answer 2

Answer: The correct answer is lower left.

Explanation:

Metals are defined as the elements which loose electrons to attain stable electronic configuration.

Reactivity of metals is defined as the tendency of metals to loose electrons. If a metal looses electrons easily, it means that it is more reactive.

Reactivity increases down the group and decreases across a period for metals.

In the periodic table attached,

• The elements present in lower left are metals which are most reactive.
• The elements present in upper right are non-metals which are most reactive.
• The elements present in middle are metals which are less reactive.
• The elements present in upper left are metals which are least reactive reactive.
• The elements present in lower right are non-metals which are least reactive.

Hence, the correct answer is lower left.