Look at the dots around each symbol and the energy levels from the resources above;Answer the questions in the text entry option for this assignment.
Copy and paste questions and respond in complete sentences.
Include a space between each question.
Be specific with your responses for each question. Assume your reader has no knowledge of the subject and you are teaching them via your answers.
Please answer the following questions:
Why does Na have only one dot?
Why do none of these diagrams show more than 8 dots?
What relationship do you notice between the dots in these two charts?
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why? (Hint: Octet Rule (Links to an external site.))
Answers
Hello! Here's the answer I was able to come up with:
Why does Na have only one dot?
Sodium, or Na, has only one valence electron. (This makes the atom tend to participate in ionic bonding and "give" its single valence electron to an atom like chlorine.)
Why do none of these diagrams show more than 8 dots?
It is physically impossible for an atom to have more than 8 electrons in its valence layer, according to the Octet Rule.
What relationship do you notice between the dots in these two charts?
The dot diagram for each element represents the number of electrons each element will have in its outermost, or valence, shell. (2-8-8)
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why?
An atom can have a maximum of two electrons in its innermost layer. Hydrogen and helium have only one and two electrons, respectively, so they don't have enough electrons to actually have more than one layer. Therefore, their outermost layer is, in fact, their only layer. This is why the number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table.
Don't copy this word for word! You will most likely be in trouble for plagiarism. Instead, rewrite these ideas in your own words, or paraphrase. Good luck, and I know you can do it! ♥
Related Questions
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Which statements describe elements?- Elements can be separated using physical means.- Elements are made of atoms with the same atomic number.- Elements cannot be separated using ordinary chemical means.- Elements may be represented by chemical symbols.- Elements are made of two or more different types of atoms.
A solid and a liquid are shaken together in a test tube to produce a milky mixture that eventually separates into a clear liquid and a white solid.
Answers
2) oxidation-reduction
3) double replacement
4) acid-base neutralization
Answers
In oxidation-reduction reactions (or redox reactions), a number of electrons are transferred between two species. During this process, the oxidation number of an atom (or molecule or ion) changes by receiving or losing an electron.
Answer: It is number 2
b. follow the instructions on the label
c. keep materials in unlabeled containers
d. use chemicals in well ventilated areas
Answers
Justification:
Indeed, keeping materials in unlabeled containers is a risky, dangerous, bad practice.
Labels should be according to international standards. That is, further to the name of the product, labels must signal the danger associated with the product: whether it is poison, toxic, flammable, acid, caustic, explosive, or harmful to the body or the enviroment.
On the other hand, the other options, a. mix chemicals in well ventilated areas, b. follow the instructions on the label, and d. use chemicals in well ventilated areas, are good safety practices, among many others.
Answer: C
Explanation:
Keep materials in unlabeled containers
B. the direction of its orbit
C. the stability of its orbit
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The reactants are at a higher potential energy compared to the products.
The reactants are at a lower potential energy compared to the products.
There will not be an activation energy barrier.
Answers
Answer : The correct option is, The reactants are at a higher potential energy compared to the products.
Explanation :
Exothermic reaction means energy is released and the overall enthalpy change is negative.
In exothermic reaction, the reactants are at a higher potential energy compared to the products. In other words, we can say that the products are more stable than the reactants.
My reason being is because the reactants tend to gather "hyper" energy which is also known as potential energy and this will occur as shown in the answer as an Exothermic Reaction.
I really hope that this helps you out a lot. Have a nice day :)
MA= Length+ width
MA= Length * width
MA= Length/ wisth
Answers
Answer:
length/width
Explanation:
Answer:
Length/Width
Explanation:
I did the module 10 exam so I know it is length/width