객관식
Which of the following is the correct electron configuration for germanium (Ge, atomic number 32)?
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10. Periodic Properties of the Elements
The Electron Configuration
객관식
Which of the following is the correct electron configuration for boron (atomic number 5)?
A
1s^2 2s^1 2p^1
B
1s^2 2s^2 2p^1
C
1s^2 2s^2 2p^2
D
1s^2 2s^1 2p^2
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검증된 단계별 안내1
Step 1: Identify the atomic number of boron, which is 5. This means boron has 5 electrons to place in its electron configuration.
Step 2: Recall the order in which electron orbitals are filled according to the Aufbau principle: 1s, 2s, then 2p.
Step 3: Fill the 1s orbital first with 2 electrons: \$1s^{2}$.
Step 4: Next, fill the 2s orbital with 2 electrons: \$2s^{2}$.
Step 5: Place the remaining 1 electron in the 2p orbital: \$2p^{1}$. Thus, the electron configuration is \$1s^{2} 2s^{2} 2p^{1}$.
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