![]() |
Created by Matt Peters
almost 8 years ago
|
|
Question | Answer |
Electron configuration and the Periodic Table | . |
First Electron Shell | Can only have 2 two electrons |
Second Electron Shell | Can hold 8 electrons |
Third Electron Shell | Can only hold 8 electrons also. |
Can outer shells be filled if the inner shells are not? | NO! The inner shells have to be full before the next shell can be used. |
- This is neon electron - It has two shells - Neon can also be written as 2,8 - 2 electrons in the inner ring and 8 in the outer -If it had one more electron another shell would be needed. It is in group 8, we know this because there are 8 electrons in the outer shell | |
- This is a sodium atom - Sodium can be written 2,8,1 - It has 3 shells as the two inner shells are full meaning the remaining electron needs to be on the outside. -It is in group one, we know this because of the amount of electrons on the outer shell. | |
What does the horizontal row tell us about the configuration | The horizontal row on the periodic table tells us how many rings there are needed to be in the atom. |
Atoms with a full outer shell | Atoms with a full outer shell are more stable, atoms need to either gain or loose electrons to do this. |
Atoms in group one | Atoms in group one aare all very reactive as they only need to loos one electron to get a full outer shell. |
Electrons in orbit | Electrons are held in orbit because of the positively charged nucleus pull on the negatively charged electron |
What does it mean for the outer electron shell to be further from the nucleus? | The atoms with more shells, tend to loose electrons more easily as the pull between nucleus and electrons is not as strong. Therefore they can be lost more easily. |
What is a diatomic molecule | A diatomic molecule is a pair of atoms. |
There are no comments, be the first and leave one below:
Want to create your own Flashcards for free with GoConqr? Learn more.