Answer: 1s² 2s² 2p⁶
Many Gizmo activities end with a summary paragraph. Here are the typical missing words:
Answer: Argon (Ar). (Explanation: Noble gases have full outer shells, so they hold onto their electrons very tightly.)
Answer: Elements with similar electron configurations are in the same group (vertical column) of the periodic table. electron configuration gizmo answer key activity c
Answer: The atomic radius decreases. (Explanation: As you move right, protons are added to the nucleus. This increases the positive charge, pulling the electrons closer to the center, making the atom smaller.)
For more interactive practice and to verify your specific worksheet version, you can access the official ExploreLearning Gizmo or look for student-uploaded guides on platforms like Studocu and CliffsNotes .
The Gizmo provides feedback stating "Electrons not placed in the correct energy levels". Answer: 1s² 2s² 2p⁶ Many Gizmo activities end
The next electron must go into the 4s orbital.
Activity C introduces the (also known as the Aufbau principle's filling order), which dictates that electrons fill lower-energy subshells before moving to higher ones. A common "trick" students encounter in this activity is that the 4s subshell fills before the 3d subshell , despite 3 being a lower shell number than 4. Activity C Step-by-Step Walkthrough
Next, the Gizmo asks you to look at rows (periods). Answer: The atomic radius decreases
Answer: Sodium (Na). (Explanation: Alkali metals have 1 valence electron that is far from the nucleus and easy to remove.)
Answer: 1s² 2s² 2p⁶ 3s² 3p⁶