Questions: Which of these four elements is the most reactive metal?

Transcript text: Which of these four elements is the most reactive metal?

Solution

Solution Steps

Step 1: Understanding Reactivity in Metals

Reactivity in metals generally increases as you move down a group in the periodic table. This is because the outer electrons are further from the nucleus and are more easily lost, making the metal more reactive.

Step 2: Identifying the Group of Alkali Metals

The alkali metals, which are in Group 1 of the periodic table, are known for being highly reactive. The elements in this group include Li (Lithium), Na (Sodium), K (Potassium), Rb (Rubidium), Cs (Cesium), and Fr (Francium).

Step 3: Determining the Most Reactive Metal

Among the alkali metals, reactivity increases as you move down the group. Therefore, Francium (Fr), which is at the bottom of Group 1, is the most reactive metal.

Final Answer

The most reactive metal among the given elements is located at position 87, which is Francium (Fr).

\(\boxed{\text{Francium (Fr) at position 87}}\)

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