객관식
Which of the following primarily determines the types of chemical reactions that an atom can participate in?
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11. Bonding & Molecular Structure
Chemical Bonds
Multiple Choice
Hydrogen can form ______ covalent bond(s) and oxygen can form ______.
A
two; two
B
one; two
C
two; one
D
one; one
검증된 단계별 안내1
Recall the valence electron configuration of hydrogen and oxygen atoms. Hydrogen has 1 valence electron, and oxygen has 6 valence electrons.
Understand that hydrogen needs 1 more electron to complete its outer shell (which holds 2 electrons), so it can form only one covalent bond.
Recognize that oxygen needs 2 more electrons to complete its octet (8 electrons in its outer shell), so it can form two covalent bonds.
Use this information to fill in the blanks: hydrogen forms one covalent bond, and oxygen forms two covalent bonds.
Therefore, the correct answer is: 'one; two'.
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