객관식
Which of the following best describes the octet rule?
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11. Bonding & Molecular Structure
Octet Rule
객관식
According to the octet rule, atoms tend to gain, lose, or share electrons to achieve how many electrons in their outermost shell?
A
18
B
2
C
8
D
10
검증된 단계별 안내1
Understand the octet rule: it states that atoms tend to gain, lose, or share electrons in order to have a full outermost shell with 8 electrons, which is a stable electron configuration similar to noble gases.
Recall that the octet rule applies mainly to main-group elements, especially those in the second period of the periodic table, where the maximum number of electrons in the outer shell is 8.
Recognize that the number 8 corresponds to the full s and p orbitals in the valence shell (2 electrons in the s orbital and 6 electrons in the p orbitals).
Note that the numbers 2, 10, and 18 correspond to other electron shell capacities (2 for the first shell, 10 for the d subshell, and 18 for the combined s, p, and d subshells), but the octet rule specifically refers to 8 electrons.
Conclude that according to the octet rule, atoms tend to have 8 electrons in their outermost shell to achieve stability.
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