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vaieri [72.5K]
3 years ago
6

An element with atomic number 18 is a noble gas.Into which family you shall place elements with atomic number 17 and 19 and why?

Chemistry
1 answer:
SVEN [57.7K]3 years ago
5 0

Answer:

Explanation:

An element with atomic number 18 is a noble gas.

The element with atomic number 19 will have one extra electron so it can donate one electron or shed one electron to attain noble gas configuration .

It tends to shed one electron to become positively charged ion . Hence they are electro-positive elements .  

Similarly the element with atomic number 17 will have one short  electron so it can gain  one electron  to attain noble gas configuration .

They  tend to gain  one electron to become negatively charged ion . Hence they are electro-negative  elements . They have high  electronegativity .

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koban [17]

Answer:

3.5 × 10⁵ g of salt

Explanation:

<em>What is the mass (grams) of salt in 10.0 m³ of ocean water?</em>

We have this data:

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  • 1.0 L of ocean water contains 0.60 mol of salt

We will need the following relations:

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We can use proportions:

10.0m^{3} .\frac{10^{3}dm^{3}  }{1m^{3} } .\frac{1L}{1dm^{3} } .\frac{0.60molSalt}{1.0L} .\frac{58.44gSalt}{1molSalt} =3.5 \times 10^{5} gSalt

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3 years ago
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Gnoma [55]

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3 years ago
Can gravity be considered a force? Explain your reasoning
bija089 [108]

Answer:

I think that gravity can be considered a force.

Explanation:

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Hope this helped! :)

8 0
2 years ago
An atom's nucleus has 92 protons and its mass number is 235. how many neutrons are in the nucleus? what is the name of the atom
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Element 92 is Uranium.

Uranium is also the highest atomic number element which exists in nature. All of the rest above element 92 only exist nuclear high-energy reactions (the transuranium elements), and most experience nuclear decay very quickly and form other elements with fewer protons. 
6 0
3 years ago
For a half-reaction in an acidic solution, which substances should you add to balance the equation?
solmaris [256]
Hello!

I believe the correct answer to this question is H+ and H2O.

I hope you found this helpful! :)
8 0
3 years ago
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