Atomic Number, Atomic Mass, and the Atomic Structure | How to Pass Chemistry
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- Atoms, atomic structures, protons, ions, neutrons, learn what all these words mean! This video explains how to make sense of chemical symbols and the periodic table. Finally you will be able to calculate protons, electrons and neutrons of an element, just in time to ace that quiz!
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Practice problems with step by step answers:
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TIMESTAMPS
0:55 Atom Structure
1:10 Chemical Symbol Setup (Isotope Notation)
Neutral Element Example
2:24 Beginner Ions Example
3:35 Intermediate Ions Example
4:18 Advanced Ions Example
5:46 Practice problems
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Hey Melissa. I learned this in class the other day. I wanted to ask you a quick question.
My teacher taught me that the atomic number is protons and electrons while the bottom number is protons and neutrons. Am I missing something and is is possible that I misheard this? Or misunderstood? Hopefully you can explain this to me. Thanks in advance!
@@0797cjm Atomic no is only equal to no protons but if you see in a neutral atom the protons and electrons are equal so only in a neutral atom the atomic no is equal to no of protons and electrons. And the bottom no itself is atomic number. So your teacher told this for neutral atom only.
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I've researched the information provided to us at 6:12 and the number of electrons is actually 8. Also, by following your example whenever using the periodic table. Unless I'm missing something but the charge according to a notable website has indicated that is ( -1 ), which would give us the equation of 9 - ( -1) = 8 for the total of electrons.
When Fluorine is in its ion form meaning it shows a F- then yes this is true but that isn’t the question. This question is showing F in its neutral state this is why the number of protons and electrons would be the same since there is no charge shown.
Melissa Maribel awesome! I greatly appreciate that you took the time to explain that to me because I was following the steps provided and didn’t have the same answer. 🙂
Now, would you please explain the number of electrons for Oxygen and how you came to that conclusion? I’m having difficulty with that particular question at the moment. I’m simply doing this as practice on my own based on the set of rules that you’ve provided.
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thank you for your video! It has been very helpful. I do have 1 question, at the end, in the practice examples, how do you find the number of electrons in F without being given the atomic charge?
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Hi! I got the answer to the first practice question, but I don't understand how to find the neutrons for the second practice problem.
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This is great, but am having difficulty finding the neutron, I don't seem to understand that part, I realized it during the practice question, I wasn't able to find the neutron as others
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hi there can you help me with the F one...I got the electron as 11 instead of 9....what's the charge?
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for 5:18 I got 10 for electron because the charge for "F" on my periodic table is -1. So I did ELECTRON = PROTON which is 9 - (-1) = 10
pls check if I'm wrong
How do we know if an element is neutral
before finding the protons, neutrons, and electrons? In finding these for iron for example, I automatically subtracted protons from the charge but since it is neutral, the protons and electrons are equal.
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For the last practice/example, how do you solve or find out the exact number of the ion charge? I was a little confused lol
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What about when you try to find the atomic number for something such as H2O? I have been stuck on that for a few hours
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What must I do first to find the number of protons neutrons electrons of fluorine
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Ms Maribel but what if I don't know the number of neutrons and the mass number?
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You're welcome 😊
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