Final answer:
Elements in Group 1A at the bottom of the group will require the least amount of energy to remove an electron and have low electronegativity. Option A is correct.
Step-by-step explanation:
The elements that will require the least amount of energy to remove an electron are found in Group 1A (the alkali metals) and at the bottom of the group because ionization energy decreases down a group.
These elements have low electronegativity since electronegativity decreases from top to bottom within a group due to the increasing atomic size, which makes the nucleus less effective at pulling bonding electrons. Therefore, the correct answer is A. Column 1A; Low Electronegativity.
The elements in columns 1A and 2A are known as the alkali metals and alkaline earth metals, respectively. These elements have atoms that will require the least amount of energy to remove an electron because they have low ionization energies. So, the answer is A. Column 1A; Low Electronegativity.