객관식
In which subshells are the valence electrons typically found for main group elements?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
객관식
Which of the following is the number of valence electrons in a hydrogen atom?
A
2
B
1
C
4
D
8
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검증된 단계별 안내1
Recall that valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.
Identify the atomic number of hydrogen, which is 1, meaning it has 1 electron in total.
Since hydrogen has only one electron, that electron is also in its outermost shell (the first shell).
Therefore, the number of valence electrons in a hydrogen atom is equal to the total number of electrons it has, which is 1.
Conclude that the correct number of valence electrons for hydrogen is 1.
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