Which of the following alkaline earth metals is most reactive? (2020)

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Question: Which of the following alkaline earth metals is most reactive? (2020)

Options:

Correct Answer: Barium

Exam Year: 2020

Solution:

Barium is the most reactive alkaline earth metal due to its larger atomic size and lower ionization energy.

Which of the following alkaline earth metals is most reactive? (2020)

Which of the following alkaline earth metals is most reactive? (2020)

Step 1: Understand what alkaline earth metals are. They are a group of elements in the second column of the periodic table, including beryllium, magnesium, calcium, strontium, barium, and radium.
Step 2: Know that reactivity in metals generally increases as you move down a group in the periodic table.
Step 3: Recognize that barium is lower in the alkaline earth metals group compared to others like beryllium and magnesium.
Step 4: Remember that larger atomic size means the outer electrons are further from the nucleus, making them easier to lose.
Step 5: Understand that lower ionization energy means it takes less energy to remove an electron from an atom.
Step 6: Conclude that barium, being larger and having lower ionization energy than the other alkaline earth metals, is the most reactive.

No concepts available.