6 Questions
What does the term 'valency' refer to?
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?
Aluminum
In the compound NaCl, what is the valency of sodium and chlorine, respectively?
Sodium: 1, Chlorine: 7
What is the term for the outermost shell of an atom?
Electron shell
Which subatomic particle is responsible for the formation of chemical bonds?
Electron
What determines the chemical properties of an element?
Atomic number
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).
Test your knowledge of valency with this quiz! Explore the concept of valency, common valencies of elements, and their compounds.
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