Podcast
Questions and Answers
Which group of elements in the Periodic Table are known as alkali metals?
Which group of elements in the Periodic Table are known as alkali metals?
- Group VIIA
- Group IIB
- Group IA (correct)
- Group IIA
Which of the following elements has one electron in its outermost orbit?
Which of the following elements has one electron in its outermost orbit?
- Lithium
- Sodium
- Potassium
- All of the above (correct)
Which of the following statements about alkali metals is true?
Which of the following statements about alkali metals is true?
- They have high melting and boiling points.
- They are soft and have low melting and boiling points. (correct)
- They occur in free state.
- They react slowly with oxygen.
What is the nature of alkali metal salts?
What is the nature of alkali metal salts?
Which of the following reactions represents the reaction of an alkali metal with oxygen?
Which of the following reactions represents the reaction of an alkali metal with oxygen?
Flashcards
Alkali Metals
Alkali Metals
Elements in Group IA of the periodic table, characterized by having one electron in their outermost shell.
Alkali Metals Outermost Shell
Alkali Metals Outermost Shell
All alkali metals have one electron in their outermost shell, making them highly reactive.
Alkali Metal Properties
Alkali Metal Properties
Alkali metals are soft and have low melting and boiling points compared to other metals.
Alkali Metal Reaction with Oxygen
Alkali Metal Reaction with Oxygen
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Alkali Metal Salts
Alkali Metal Salts
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Study Notes
Alkali Metals
- The alkali metals are the elements in Group 1 of the Periodic Table.
- These elements have one electron in their outermost orbit.
Properties of Alkali Metals
- Alkali metals readily lose one electron to form a positive ion (cation) with a charge of +1.
- Alkali metals are highly reactive, especially with water and oxygen.
Alkali Metal Salts
- Alkali metal salts are ionic compounds that consist of a positive alkali metal ion and a negative ion (anion).
- Alkali metal salts are usually white, crystalline solids that are soluble in water.
Reactions of Alkali Metals
- Alkali metals react with oxygen to form an oxide, releasing heat and light in the process.
- The general equation for the reaction of an alkali metal with oxygen is: 4M + O2 → 2M2O.
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Description
Test your knowledge of alkali metals and their properties with this quiz! Learn about elements such as lithium, sodium, and potassium, and their valency and placement on the Periodic Table. Discover why they are called alkali metals and how they react with water to form strong alkalies.
