The periodic table was developed to classify elements according to their atomic numbers and their physical and chemical properties. You can predict the chemical properties of an element by its location in a column on this table.

Question

Which element has properties most similar to those of calcium (Ca)?

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C (carbon)
K (Potassium)
Kr (krypton)
Mg (Mangnesium)

Answer 1

Calcium (Ca) is in Group 2 of the periodic table, which is the alkaline earth metals group. The element that has properties most similar to those of calcium is Magnesium (Mg), as both are in the same group and share similar chemical properties.

So, the answer is Mg (Magnesium).