NCTI Installer Tech Multiple Choice Part 1 questions with correct answers.

Why do only the outer electrons leave their orbit shells? Answer Only outer electrons leave their orbit shells because electrons farthest from the nucleus are more easily freed from their orbits due to a weaker electrostatic force. What is required to have a balanced (or stable) atom? Answer The number of electrons must equal the number of protons in order to have a balanced atom. List the capacity of each of the first four orbital shells of an atom. Answer Shell: #1 = 2 electrons; #2 = 8 electrons; #3 = 18 electrons; and #4 = 32 electrons. What is the maximum electron capacity of a valence shell? Answer A valence shell can hold a maximum of eight electrons. Electrons in orbits nearest the nucleus contain _________ energy than those in more distant orbits. Answer Electrons in orbits nearest the nucleus contain less energy than those in more distant orbits. What will happen to a valence electron that has enough energy added to it? Answer A valence electron that has enough energy added to it will move away from its atom. What major factor determines which category a particular element belongs? Answer The number of electrons in the valence shell determines the element category.