level: Nobel gases and Halogens
Questions and Answers List
level questions: Nobel gases and Halogens
| Question | Answer |
|---|---|
| Group 8 is also known as what | Nobel gases |
| Why are elements in group 0 unreactive | Because they have a full outer shell |
| Monatomic | because they are unreactive they exist as one single atom |
| What is the boiling point of nobel gases | - Low boiling point - increases as you go down the group because the RAM increase |
| Density of nobel gases | - Low densities - Increases as you go down the group because the RAM increases |
| Group 7 are also known as what | Halogens |
| Why are group 7 elements reactive | because they have 7 electrons in their outer shell and only need 1 to be complete |
| Diatomic molecules | In their elemental form halogens share electrons |
| What happens when a metal transfers an electron to a non-metal | - salts are formed - all ions have a full outer shell |
| Reactivity of halogens | - Become less reactive as you go down the group because when they gain more shells they become futher away form the nucleus - as a result, the attraction between the nucleus and the electron to be gained decreases |