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Arte-miy333 [17]
3 years ago
14

The most stable group of elements on the periodic table is the?

Chemistry
2 answers:
Contact [7]3 years ago
6 0
B) Noble gases
Most stable because they have the maximum number of valence electrons their outer shell can hold
Stels [109]3 years ago
5 0

Answer:

Noble Gases B

Explanation:

The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.

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A valid lewis structure of __________ cannot be drawn without the central atom violating the octet rule. pf5 pcl3 so3 ccl4 co2
lakkis [162]
The answer will be, so3 since s only need two electrons to complete its octet
8 0
3 years ago
The photoelectric effect occurs when _____ are emitted from metal when the metal is struck by light of certain frequencies.
Ainat [17]

Answer:

electrons

Explanation:

The photoelectric effect occurs when electrons are emitted from metal when the metal is struck by light of certain frequencies.

Some of the applications of this effect include photomultipliers (which are a key component in spectroscopy instruments) and night vision devices.

4 0
3 years ago
Read 2 more answers
The chemical formula for magnesium oxide is MgO. A chemist determined by measurements that 0.030 moles of magnesium oxide partic
tamaranim1 [39]

Answer:

1.209g of MgO participates

Explanation:

In this problem, we have 0.030 moles of MgO that participates in a particular reaction.

And we are asked to solve for the mass of MgO that participates, that means, we need to convert moles to grams.

To convert moles to grams we need to use molar mass of the compound:

<em>1 atom of Mg has a molar mass of 24.3g/mol</em>

<em>1 atom of O has a molar mass of 16g/mol</em>

<em />

That means molar mass of MgO is 24.3g/mol + 16g/mol = 40.3g/mol

And mass of 0.030 moles of MgO is:

0.030 moles MgO * (40.3g/mol) =

<h3>1.209g of MgO participates</h3>
3 0
3 years ago
If gas pressure is held constant and the temperature is decreased, gas volume will _____
saw5 [17]

Answer:

Increase

Explanation:

If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

5 0
4 years ago
Imagine that a new planet was discovered in our solar system. Answer the following questions based on the patterns discovered by
Elena-2011 [213]

Answer:

counter clockwise

Explanation:

Dont all planets in our solar system rotate counterclockwise?

6 0
4 years ago
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