Which of the following elements has the lowest first ionization energy?

Which of the following elements has the lowest first ionization energy?

Step 1: Understand what ionization energy is. It is the energy required to remove an electron from an atom.
Step 2: Look at the periodic table. Elements are arranged in order of increasing atomic number.
Step 3: Identify the elements in the question: Boron (B), Beryllium (Be), Carbon (C), and Nitrogen (N).
Step 4: Note the positions of these elements in the periodic table: Be is in Group 2, B is in Group 13, C is in Group 14, and N is in Group 15.
Step 5: Remember that ionization energy generally decreases as you move down a group and increases as you move across a period from left to right.
Step 6: Compare the first ionization energies of the elements: Beryllium has a higher ionization energy than Boron, Carbon, and Nitrogen.
Step 7: Conclude that Boron has the lowest first ionization energy among the given elements.

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