Which two elements have similar characteristics- calcium hydrogen barium silicon krypton

Calcium and barium

Explanation:

Krypton is a noble gas it do not take part in any reaction its physical and chemical property does not resembles to other atoms.

Hydrogen is the reducing gas its physical and chemical property does not resembles to other atoms.

Silicon is a semiconductor its physical and chemical property does not resembles to other atoms.

Calcium and Barium are placed in the same group 2 in the periodic table . Both are alkaline earth metal.

As both element are placed in the same group they have same physical and chemical properties.

Example:

Thus, we can say Barium and Calcium have similar properties.

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