Identify the element that shows similar chemical behaviour to that of calcium.boronstrontiumchlorinesodium

To determine the element that shows similar chemical behavior to calcium among the options provided (boron, strontium, chlorine, and sodium), we should look at the periodic table and consider elements in the same group.

1. Same Group Consideration: Calcium (Ca) is located in Group 2 of the periodic table, which is known as the alkaline earth metals. Elements in the same group typically exhibit similar chemical properties due to having the same number of valence electrons.

2. Element Analysis:

   • Boron (B): Located in Group 13, it behaves differently from calcium.
   • Strontium (Sr): Located in Group 2, like calcium, strontium is also an alkaline earth metal. This suggests similar chemical behavior.
   • Chlorine (Cl): Located in Group 17, chlorine would show very different chemical behavior as it is a halogen.
   • Sodium (Na): Located in Group 1, sodium is an alkali metal and behaves differently from calcium.

3. Conclusion: Based on the analysis, strontium (Sr) is the element that exhibits similar chemical behavior to calcium (Ca) because it belongs to the same group (Group 2).

Final Answer

Strontium (Sr) shows similar chemical behavior to calcium (Ca).