Why are the noble gases the least reactive elements?(1 point)
Responses
They have the same number of electrons as protons.
They are the last elements in each row on the periodic table.
Their outer most energy levels are complete with 8 electrons.
They are all radioactive.
Their outer most energy levels are complete with 8 electrons.
The correct response is: "Their outermost energy levels are complete with 8 electrons." Noble gases have a full octet in their outermost energy level, making them stable and less likely to engage in chemical reactions.
The correct answer is: Their outermost energy levels are complete with 8 electrons.
To understand why noble gases are the least reactive elements, we need to look at their electron configuration. Noble gases have full electron shells, meaning their outermost energy levels are complete with 8 electrons (except for helium, which has 2 electrons in its outermost shell). This makes them stable and unwilling to gain or lose electrons.
To determine this, you need to know the atomic structure of noble gases. You can find this information in the periodic table or use other reliable sources. The noble gases are located in Group 18 of the periodic table, also known as the "Group 8A" or the "Group 0". This group includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
By understanding the electron configuration of noble gases, we can conclude that their outermost energy levels are complete with 8 electrons, making them the least reactive elements.