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Masteriza [31]
3 years ago
7

Which statement best explains why the elements in Group 18 do not have electronegativity values?

Chemistry
1 answer:
Gnesinka [82]3 years ago
5 0

Answer:

1) The elements have filled valence levels.

Explanation:

Since they have filled valence levels, they're stable and don't need to electrons to fill their valence shells since they're already full.

2) False, They do have electrons

3) False, He does have only one electron shell, but going down the periods, every next element have one more electron shell than a preceding one has.

4)False, they're actually the smallest atoms of their respective period

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Fittoniya [83]

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Explanation:

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2 years ago
Which environmental concern does not apply to wind power?
wolverine [178]
<h2>Answer:</h2>

The correct answer is option C which is chemical waste.

<h3>Explanation:</h3>
  • Wind is the renewable source of the energy. The air has energy in it which is used to run the generator to produce electrical energy from the mechanical energy of wind.
  • Wind energy is perfect in sense of pollution. It does not create any chemical waste because there is no conversion or production of chemical energy involve in this energy production.
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3 0
4 years ago
The conversion of nitrogen gas to compounds useful to crops is called nitrogen compounding.
Nastasia [14]
False. The nitrogen conversion into a compound by light or bacteria is called nitrogen fixing, or processing in any case.
8 0
3 years ago
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What is the effect on the concentrations of no2, hno2, and oh when is added to a solution of in water.
Marta_Voda [28]

Answer:

Adding HNO2 increases the concentration of HNO2 and shifts the equilibrium to the left, increasing the concentration of NO2− ions and decreasing the concentration of OH− ions. PLEASE GIVE ME BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!! =) Hope this helps!

3 0
3 years ago
Type the correct answer in the box. Calculate the molar mass of aluminum oxide (Al2O3). Express your answer to four significant
Zepler [3.9K]

Molar mass can be given as the mass of each constitutive element in the formula unit. The molar mass of aluminum oxide is 101.957 grams.

<h3>What is a formula unit?</h3>

Formula unit can be defined as the one unit of the molecular formula of the compound. It describes the number of atoms of each element present in the compound.

The formula unit for Aluminum oxide is \rm Al_2O_3.  The molar mass has been the sum of the mass of aluminum and oxygen.

The molar mass of aluminum oxide has been given as:

\rm Molar\;mass=2\;\times\;Al+3\;\times\;O\\Molar\;mass=2\;\times\;26.98\;+\;3\;\times\;15.99\;grams\\Molar\;mass=101.957\;grams

The molar mass of aluminum oxide is 101.957 grams.

Learn more about molar mass, here:

brainly.com/question/12127540

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3 years ago
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