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Questions and Answers
What is primarily responsible for the variable valences and electronic structures of certain ions?
Covalent bonding involves the sharing of multiple pairs of electrons between atoms.
False
What is the primary characteristic of covalent bonding?
the sharing of a pair of electrons
In molecules with covalent bonds, each bond typically involves a pair of ________.
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Match the following terms with their descriptions:
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What produces the positive end of a dipole?
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The positive end of a dipole has an attraction for positively charged electrons.
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What do protons in the nuclei create in a dipole?
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The attraction occurs between the positive end of the dipole and the ________ charged electrons.
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Match the following terms with their descriptions:
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Study Notes
Low-lying d orbitals and variable valences
- Low-lying d orbitals are responsible for the variable valences and electronic structures of metal ions.
Covalent bonding
- Covalent bonding involves the "sharing" of electrons between chemical entities.
- The nuclei of the bonded atoms have a positive charge, which attracts the negatively charged electrons.
Bismuth Subnitrate
- Bismuth subnitrate is used in pharmaceutical applications, specifically for its adsorbent and protective properties.
- It occurs as a white powder, which is slightly moisture-sensitive and acidic.
- Bismuth subnitrate can act as a protective agent, as it forms a protective layer over irritated surfaces.
- Bismuth subnitrate can also act as an escharotic agent, which causes tissue sloughing and scar tissue formation. This can be beneficial for healing.
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Description
This quiz covers key concepts in chemistry, focusing on low-lying d orbitals and their role in variable valences of metal ions. Additionally, it explores covalent bonding and the properties and applications of bismuth subnitrate in pharmaceuticals. Test your knowledge on these essential topics in chemical science.