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Jlenok [28]
3 years ago
10

Why is boron and beryllium an exception to the octet rule

Chemistry
1 answer:
aliya0001 [1]3 years ago
4 0

Answer:

Explanation:

Beryllium especially, but Boron as well both exhibit metallic characteristics.

The outside ring of Beryllium contains 2 electrons. It would have to take on 6 electrons to have a ring of 8. The same statement can be made about Boron (except that it would need 5 electrons to make 8). It is easier for the atom to give up 2 or 3 than than to take on 5 or 6. It would not be easy to have a 5 or 6 minus charge on it.

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What are the properties of compounds, mixtures, solutions, and pure substances? please answer!
PtichkaEL [24]
Mixtures – two or more substances that are not chemically combined<span> with each other and can be </span>separated<span> by physical means. The substances in a mixture retain their individual properties. Solutions – a special kind of mixture where one substance dissolves in another.</span>
4 0
3 years ago
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When the n quantum number equals 1, we are in what orbital?
g100num [7]

Answer:

p orbital

Explanation:

8 0
3 years ago
Mass = 100g, volume=20ml, what is density?
Nonamiya [84]

Answer:

<h3>The answer is 5.0 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

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mass = 100 g

volume = 20 mL

So we have

density =  \frac{100}{20}  \\

We have the final answer as

<h3>5.0 g/mL</h3>

Hope this helps you

4 0
3 years ago
How many grams is 5.4x10 to the 23 molecules of al2o3?
8090 [49]

Answer:

91.49 grams

Explanation:

No of molecules = no of moles × Avogadro's number

No of moles = No of molecules / Avogadro's number

Number of moles = 5.4×10^23/6.02×10^23

Number of moles = 0.897 moles of Al2O3

Number of moles = mass in gram / molar mass

Mass in gram = number of moles× molar mass

Mass in gram = 0.897× 102

91.49 grams

5 0
3 years ago
6. List the different groups on the periodic table
Alex73 [517]

Answer:

Group 1: alkali metals, or lithium family.

Group 2: alkaline earth metals, or beryllium family.

Group 3: the scandium family.

Group 4: the titanium family.

Group 5: the vanadium family.

Group 6: the chromium family.

Explanation:

5 0
3 years ago
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