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Questions and Answers
What does the term 'valency' refer to?
What does the term 'valency' refer to?
- The number of bonds an atom can form with other atoms (correct)
- The ability of an atom to attract electrons in a chemical bond
- The ability of an atom to lose electrons and form cations
- The ability of an atom to gain electrons and form anions
Which element with a valency of 3 is commonly found in compounds with oxygen?
Which element with a valency of 3 is commonly found in compounds with oxygen?
- Carbon
- Aluminum (correct)
- Sulfur
- Nitrogen
In the compound NaCl, what is the valency of sodium and chlorine, respectively?
In the compound NaCl, what is the valency of sodium and chlorine, respectively?
- Sodium: 2, Chlorine: 7
- Sodium: 1, Chlorine: 8
- Sodium: 1, Chlorine: 7 (correct)
- Sodium: 2, Chlorine: 6
What is the term for the outermost shell of an atom?
What is the term for the outermost shell of an atom?
Which subatomic particle is responsible for the formation of chemical bonds?
Which subatomic particle is responsible for the formation of chemical bonds?
What determines the chemical properties of an element?
What determines the chemical properties of an element?
Flashcards
Valency
Valency
The number of bonds an atom can form with other atoms.
Which element with a valency of 3 is commonly found in compounds with oxygen?
Which element with a valency of 3 is commonly found in compounds with oxygen?
Aluminum (Al) has a valency of 3, meaning it can form three bonds with other atoms.
What is the valency of sodium and chlorine in NaCl?
What is the valency of sodium and chlorine in NaCl?
Sodium has a valency of 1, meaning it can form one bond. Chlorine has a valency of 7, but it usually gains one electron to become stable, giving it an apparent valency of 1 in this case.
Electron shell
Electron shell
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Which subatomic particle is responsible for chemical bonds?
Which subatomic particle is responsible for chemical bonds?
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What determines the chemical properties of an element?
What determines the chemical properties of an element?
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Study Notes
Valency
- Valency refers to the combining power of an element, which is the number of electrons an atom of that element can lose, gain, or share to form bonds with other atoms.
Elements with Specific Valency
- An element with a valency of 3 that is commonly found in compounds with oxygen is iron (Fe).
Valency in Compounds
- In the compound NaCl (sodium chloride or common table salt), the valency of sodium (Na) is 1 and the valency of chlorine (Cl) is 1.
Atomic Structure
- The outermost shell of an atom is called the valence shell.
Chemical Bond Formation
- Electrons are the subatomic particles responsible for the formation of chemical bonds.
Chemical Properties
- The chemical properties of an element are determined by the number of electrons in its outermost energy level (valence shell).
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Description
Test your knowledge of valency with this quiz! Explore the concept of valency, common valencies of elements, and their compounds.
