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

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

Options:

Correct Answer: B

Solution:

Boron has a lower first ionization energy than Be, C, and N due to its position in the periodic table.

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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