Podcast
Questions and Answers
What are the properties of elements in Group 1?
What are the properties of elements in Group 1?
Valence shell of 1, metals, reactive, soft
Describe the properties of Group 7 elements (halogens).
Describe the properties of Group 7 elements (halogens).
7 electrons in valence shell, reactive non metals, diatomic molecules, gain 1 electron
What are the physical states of chlorine, bromine, and iodine at room temperature?
What are the physical states of chlorine, bromine, and iodine at room temperature?
Chlorine: Pale yellow gas, Bromine: Red-brown liquid, Iodine: Grey-Black solid
Why are Group 8 elements (Noble gases) unreactive?
Why are Group 8 elements (Noble gases) unreactive?
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What are the unique properties of transition metals?
What are the unique properties of transition metals?
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Study Notes
Group 1 Elements (Alkali Metals)
- Have a valence shell of 1 electron
- Are soft and reactive metals
- Increase in density and decrease in melting point as you move down the group
Group 7 Elements (Halogens)
- Have 7 electrons in their valence shell
- Are reactive non-metals that form diatomic molecules (share 1 pair of electrons)
- Gain 1 electron to form a stable full outer shell
- Decrease in reactivity as you move down the group
- Increase in boiling point as you move down the group
- Change in appearance:
- Chlorine: Pale yellow gas
- Bromine: Red-brown liquid
- Iodine: Grey-Black solid
Group 8 Elements (Noble Gases)
- Have a full outer shell, making them unreactive and unable to form bonds
- Exist as monatomic gases
Transition Metals
- Are hard metals with high melting points
- Lose variable numbers of electrons (e.g., Fe2+ and Fe2r)
- Often act as catalysts
- Form colored compounds in solution
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Description
Test your knowledge on the properties and trends of elements in Group 1 and Group 7 of the periodic table. Learn about the characteristics of metals in Group 1 and the reactive non-metals in Group 7, including their valence shell configurations, reactivity, and physical properties.
