Which alkaline earth metal is the least reactive?

Which alkaline earth metal is the least reactive?

Step 1: Understand what alkaline earth metals are. They are a group of elements in the second column of the periodic table.
Step 2: Identify the alkaline earth metals. They include Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
Step 3: Learn about reactivity. Reactivity refers to how easily an element can lose electrons to form positive ions.
Step 4: Know that ionization energy is the energy required to remove an electron from an atom. Higher ionization energy means lower reactivity.
Step 5: Compare the ionization energies of the alkaline earth metals. Beryllium has the highest ionization energy among them.
Step 6: Conclude that since Beryllium has the highest ionization energy, it is the least reactive alkaline earth metal.

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