Multiple Choice
How many orbitals are there in the third shell (n=3)?
9. Quantum Mechanics
Quantum Numbers: Principal Quantum Number
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which electron possesses the lowest possible energy from the image provided?
A
A
B
B
C
C
D
D
E
E
Verified step by step guidance1
Identify the concept of electron energy levels: Electrons are arranged in energy levels or shells around the nucleus of an atom. The closer an electron is to the nucleus, the lower its energy.
Observe the image: The image shows a Bohr model of an atom with electrons labeled A, B, C, D, and E on different energy levels.
Determine the position of each electron: Electron D is closest to the nucleus, followed by C, B, E, and A, which is the farthest.
Apply the concept of energy levels: Electrons closer to the nucleus have lower energy. Therefore, the electron in the innermost shell (closest to the nucleus) has the lowest energy.
Conclude which electron has the lowest energy: Based on the positions, electron D is the closest to the nucleus and thus possesses the lowest possible energy.
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