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Elements for Kids

Post-transition, Poor, Other Metals

• They are solid metal under standard conditions.
• Like most metals they are malleable, ductile, and good conductions of heat and electricity.
• They have a fairly high density.
• In comparison to transition metals, they generally are softer and have lower melting and boiling points.

1. Aluminum
2. Gallium
3. Lead
4. Tin
5. Thallium
6. Indium
7. Bismuth

• Sometimes zinc, cadmium, and mercury are categorized with the post-transition metals rather than the transition metals.
• Aluminum is the third most abundant element in the Earth's crust behind oxygen and silicon.
• Sometimes germanium and antimony are categorized as post-transition metals instead of metalloids.
• Gallium's melting point is only slightly above room temperature and it will melt if held in the hand.
• Bismuth is used in Pepto-Bismol, a drug used to help upset stomachs.
• Bismuth was once thought to be the heaviest stable element, but recently it was discovered to be slightly radioactive.
• Indium is used in electronics including flat panel displays and touch screens.
• The name thallium comes from the Greek word "thallos" which means "a green shoot or twig."
• Thallium is highly toxic and can cause death. One symptom of thallium poisoning is loss of hair.

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