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Alkali Metals
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Science, Physics, Chemistry
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6th - 12th Grade
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Hard
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The video discusses alkali metals, highlighting their single outer electron and high reactivity. It covers lithium's reaction with water, producing hydrogen and heat. Alkali metals are low-density, soft, and have low melting points. Reactivity increases down the group due to electron shielding. They exist naturally as compounds, not free elements.
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