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Ionic Bonding
Junior Cert Science
| Question | Answer |
|---|---|
| What do atoms form when they combine with atoms of another element | Compounds |
| What holds atoms together in a compound | Chemical bond |
| How many electrons do the noble gases (group VIII) have on their outer shell | 8, they have a full outer shell |
| Are group VIII elements stable or unstable | Stable |
| What does the Octet Rule state | Atoms bond together so that each atom ends up with an electron arrangement with 8 electrons in its outermost shell |
| When is an ionic bond formed | When electrons are given of taken by atoms |
| What is an ion | A positively or negatively charged atom or group of atoms |
| If an atom loses electrons does it become positively or negatively charged | Positively |
| If an atom gains electrons does it become positively or negatively charged | Negatively |
| A sodium atom has an electronic configuration of 2, 8, 1, is it stable | No, it easily loses its outer electron |
| A chlorine atom has an electronic configuration of 2, 8, 7, is it stable | No, it will easily gain an electron |
| If sodium loses it electron what does it become | Sodium ion with a charge of +1 |
| If chlorine gains an electron what does it become | Chlorine ion with a charge of -1 |
| Is a chlorine ion and a sodium ion attracted to one another | Yes because they have opposite charges |
| When a chlorine ion and a sodium ion, bond with one another, what is formed | Sodium chloride |
| Does a chlorine ion have a full outer shell | Yes, it gains one |
| Does a sodium ion have a full outer shell | Yes, it loses one |
| A magnesium atom has an electronic configuration of 2, 8, 2, is it stable | No, it needs to lose 2 electrons |
| If Mg loses 2 electrons, what does it become | Magnesium ion, with a full outer shell |
| An oxygen atom has an electronic configuration of 2, 6, is it stable | No, it needs to gain 2 electrons |
| If oxygen gains 2 electrons, what does it become | Oxygen ion with a full outer shell |
| When a magnesium ion and an oxygen ion bond together what is formed | Magnesium oxide |
| How is an ionic bond formed | Ir is formed by the force of attraction between a positive and a negative ion |
Created by:
gcu science
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