Question

The chemical properties of calcium are most similar to the chemical properties of
1.) Ar
2.)K
3.) Mg
4.) SC​

Answer 1

Answer:

3..Mg..which is magnesium..

Explanation:

Because these two elements(Mg andCa) fall in the same group.

Answer 2

(3) The chemical properties of calcium are most similar to the chemical properties of Mg.

Explanation:

• Calcium and magnesium are alkaline earth metals.
• Since, calcium and magnesium have similar chemical and physical properties, the electronic structure of both elements also similar.
• The elements are harder than alkali metals and shiny.
• The colour of calcium and magnesium is white or silvery colour.
• When these two elements reacts with water, it forms hydrogen gas and metal hydroxides.
• When they react with oxygen, it forms oxides.
• The same number of electrons are present in the valence shells of calcium and magnesium, therefore, it possess similar chemical properties.
• Therefore, option 3 is correct.