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What is the total number of valence electrons in a carbon atom in the ground state?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
Multiple Choice
How many valence electrons does hydrogen (H) have?
A
8
B
1
C
2
D
0
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검증된 단계별 안내1
Identify the element in question, which is hydrogen (H).
Recall that valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.
Determine the electron configuration of hydrogen. Hydrogen has only one electron, which occupies the first energy level (1s orbital).
Since the first energy level can hold up to 2 electrons and hydrogen has 1 electron in this shell, all of hydrogen's electrons are valence electrons.
Conclude that hydrogen has 1 valence electron.
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