GCSE Chemistry - What is Ionic Bonding? How Does Ionic Bonding Work? Ionic Bonds Explained #14

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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[@Zufi1-1]

| Ionic Bonding | 👥⚛ --->This strong bond is formed by the electrostatic forces of attraction between opposite ions/ions of opposite charge. --->Strong forces of attraction arise between the oppositely charged ions, known as electrostatic forces of attraction. --->In ionic bonding, one atom (the metal) loses electrons from its outer shell, forming a positively charged ion. In contrast, the other atom (the non-metal) gains these electrons to form a negatively charged ion. ---->Dot and Cross Diagram: 1. Write the symbols of the elements involved. 2. Show the transfer of electrons: For example, sodium (Na) loses one electron, and chlorine (Cl) gains one electron. 3. Draw the ions: Sodium becomes Na⁺ with no dots or crosses left (it has lost its outer electron). Chlorine becomes Cl⁻, with 8 electrons in its outer shell (including the gained electron). Add brackets and charges to show the ions. | Practice Questions | Q. Draw the dot and cross diagram of Aluminum Chloride.

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Ah thank you Akhil, well done on your test 🙌

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Isn't that a Redox reaction between Na and Cl? 0:56

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thanks a lot I followed along and made lots of notes. this video really helped me out alot!!! time to go watch your covalent bonding video... ill leave a comment there as well!

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Thank you, glad you found it helpful 😊

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How do u know that the magnesium has 2 electrons on the outer most shell and the chlorine has 7?

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You know either by looking at the atomic number or the group

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Bro I have a doubt , When two atoms like Beryllium & Oxygen combine in terms of Ionic bond, the atomic number of Beryllium oxide is equal to the Alkaline earth metal Magnesium so whether Beryllium oxide is an Alkaline earth metal or not

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Ah thanks Tess, glad we could help!

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3:08 how do you know how many electrons are on the outer shell?

[@BreannaLeeLovee]

if you know the atomic number, eg carbon is 6, the inner shell will get 2 electrons, the next shell can have up to 8, since carbon has 6 total the remaining 4 electrons are in the outer shell. in this video he was talking about chlorine, which has atomic number 17, meaning 17 electrons, first shell gets 2, second shell gets 8, outer shell gets the remaining 7. hope this makes sense, also open to citicism, im new to all of this, just trying to figure things out like you!

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The group number tells you how many electrons are there in the outer shell of atom stop making over complicated

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When Na transfers an electron, it's outermost shell is empty, not full. Do we just pretend it isn't there and then call the next furthest shell from the nucleus the valence shell then?

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how do you know how many are in the outer shell to start with?

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u find out what group its in and that will be the number of electrons in the outer shell

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you look at the element in the periodic table and you look at the number on top of it then you check the group to see the number of shells

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7

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