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In the crystal structure of MgF₂, how many fluoride ions (anions) are present per unit cell?
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11. Bonding & Molecular Structure
Chemical Bonds
Multiple Choice
What type of bonds are present in an O2 molecule?
A
One sigma bond and one pi bond
B
Two pi bonds
C
Two sigma bonds
D
One sigma bond and two pi bonds
검증된 단계별 안내1
Understand the basic structure of an O2 molecule: It consists of two oxygen atoms bonded together.
Recall that oxygen atoms have six valence electrons each, and they need to share electrons to achieve a stable octet configuration.
In an O2 molecule, the two oxygen atoms form a double bond to share electrons. A double bond consists of one sigma (σ) bond and one pi (π) bond.
A sigma bond is formed by the head-on overlap of atomic orbitals, while a pi bond is formed by the side-to-side overlap of p orbitals.
Therefore, in an O2 molecule, there is one sigma bond and one pi bond present between the two oxygen atoms.
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