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Halogens
chemical elements by classification
| Question | Answer |
|---|---|
| Halogens are what? | Toxic and non-metallic |
| 9 F | Fluorine |
| Fluorine is named after what? | The latin word fluo, which means flow |
| Who discovered Fluorine? | Joseph Moissan in 1886 |
| What is Fluorine's boiling point? | -306.625 F |
| What color is Fluorine? | pale yellow (highly toxic gas) |
| Fluorine is the most ______ element, so it is extremely reactive | electronegative |
| Fluorine was a proposed element in what year? | 1810, but could not be separated from compounds until 1886 |
| 17 Cl | Chlorine |
| Chlorine is named from the greek chloros, meaning what? | pale green |
| Chlorine is what color in its gas state? | yellow-green |
| What is chlorine's boiling point? | -29.27 F |
| Chlorine has the highest electron affinity and has the _____(number) highest electronegativity | 3rd highest |
| Who discovered Chlorine? | Sir Humphry Davy in 1810 (confirmed status) |
| Who wrote the original description of Chlorine? | Carl Schede in 1774 |
| 35 Br | Bromine |
| Bromine's name was derived from Greek for what? | stench |
| Bromine has an intense what? | smell |
| What is bromine's boiling point? | 137.8 F |
| What is bromine used for? | Fire retardants and photographic film |
| Elemental bromine is very reactive and does or does not occur free in nature? | Does not occur free in nature |
| 53 I | Iodine |
| Iodine is named for the greek word for what? | violet |
| Who discovered Iodine? | Bernard Courtois in 1811 |
| What is iodine's boiling point? | 363.7 F |
| Iodine is found in what gland's hormones? | thyroid |
| Deficiency in iodine can cause what? | Intellectual disabilities |
| Radioactive isotopes of iodine can be used to treat what type of cancer? | thyroid cancer |
| 85 At | Astatine |
| Astatine is named for the greek word for what? | unstable |
| Astatine is what? | radioactive |
| Who discovered astatine? | Dale Corson, Kenneth MacKenzie, and Emilio Segre in 1940 |
| Astatine's appearance is what? | unknown |
| Astatine has an extremely short what? | half-life (8.1 hours) |
| Astatine decays into what elements? | Bismuth, polonium, or radon |
| What is Astatine's boiling point? | 639 F |
| 117 Ts | Tennessine |
| What is Tennessine named after? | the state it was discovered (Tennessee) |
| Tennessine is the ___ heaviest known element? | 2nd heaviest |
| Tennessine is produced how? | synthetically |
| Tennessine is the most recently discovered element as of what year? | 2017 |
| Tennessine is suspected to be what classification of element? | Halogen |
| Tennessine was originally a proposed element with what name and symbol? | Ununseptium (Uus) |
Created by:
Lailasmom
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