Question

what are the active elements of periodic table????​

Answer 1

Explanation:

• Hydrogen (H, Z=1). Although hydrogen is placed at the top of Group 1A in most versions of the periodic table, it is very different from the other members of the alkali metal group. ...
• Lithium (Li, Z=3). ...
• Sodium (Na, Z=11). ...
• Potassium (K, Z=19). ...
• Rubidium (Rb, Z=37). ...
• Cesium (Cs, Z=55). ...
• Francium (Fr, Z=87).

Answer 2

Answer:

Lithium is the most active element in the periodic table.

Explanation:

The periodic table is composed of 18 groups and 7 periods. The reactive ability of the elements shows variation in groups and periods.

In groups, it increases from left to right whereas, in periods, it increases from bottom to top.

Accordingly, the group I A elements and Group II A elements are highly reactive when compared to the other elements.

The list of reactive elements are as follows:

Lithium

Sodium

Potassium

Rubidium

Cesium

Calcium

Strontium

Barium

Among them, as Lithium is present in extreme top, it is considered as the most reactive element in the periodic table.