💡Noble gas vs Alkali metal🔥
Group 18 and Group 1 sit at opposite ends of reactivity. One has a full electron shell, the other a single loose electron.
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💡Noble gas
- ✓Group 18 with a full valence shell
- ✓Extremely stable and unreactive
- ✓Exists as single, stable atoms
- ✓Colorless, odorless gases
- ✓Examples: helium, neon, argon
🔥Alkali metal
- ✓Group 1 with one valence electron
- ✓Extremely reactive, especially with water
- ✓Soft metals with low density
- ✓Stored under oil for safety
- ✓Examples: lithium, sodium, potassium
Verdict
Noble gases are the calmest elements thanks to a full shell, while alkali metals are among the most violent due to one easily lost electron. They mark the reactivity extremes.
Frequently asked
Why are noble gases so stable?+
Their full outer electron shell gives them no drive to react with other elements.
Why are alkali metals stored under oil?+
They react so quickly with air and water that oil protects them from moisture.
Which is more reactive?+
Alkali metals are far more reactive; noble gases are nearly inert.
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