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Natalka [10]
3 years ago
15

How many valence electrons in Al(OH)4-

Chemistry
2 answers:
Amanda [17]3 years ago
7 0

Answer: There is 1 valence electron in Al(OH)4-

Explanation:

The valence electrons are the electrons that are present in the outer shell of an atom.

In this case, the "Al" works with 3 electrons of valence, while the "OH-" has only 1 electron of valence, however we have 4 atoms of "OH-", in this case, the OH- donates a lone pair of atoms to make the covalent bonds with the "Al"  but  kind of weak, that is why , usually this molecule has special conditions to be formed, like high pH, where the negative state remain longer.

Softa [21]3 years ago
4 0
<h2>Answer:</h2>

There is only one valence electron in  Al(OH)4- anion.

<h3>Explanation:</h3>
  • Valency is the number of electrons in the outer most shell of an atom.
  • In this compound, aluminium has the valency of +3. It means Al needs only 3 electrons to complete its outer most shell.
  • Hence the stable molecule Al(OH)3.
  • But the addition of one another OH- leads to the negative charge and there is one spare electron which can make bond to an atom to stable the compound.
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Vitek1552 [10]
The fourth answer is correct 
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3 years ago
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How is the polarity of a bond different from the polarity of a molecule?
Andreyy89

Answer:

A polar bond is one where the charge distribution between the two atoms in the bond is unequal. A polar molecule is one where the charge distribution around the molecule is not symmetric. It results from having polar bonds and also a molecular structure where the bond polarities do not cancel.

Explanation:

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2 years ago
A. Energy is transferred to different forms
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Answer:

A. Energy is transferred to different forms .

Explanation:

Hello!

In this case, we need to consider the law of conservation of mass and energy which states that mass and energy cannot be neither created nor destroyed, just modified; it means we can rule out B. and C. so far.

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3 0
3 years ago
An ideal gas has a volume of 5.00L under a pressure of 1.00 atm and a temperature of 10.0 K. If the temperature is changed to 10
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Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0
2 years ago
How far apart must two point charges of 75.0 nC (typical of static electricity) be to have a force of 1.00 N between them? (answ
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Answer:

7.12 mm

Explanation:

From coulomb's law,

F = kqq'/r².................... Equation 1

Where F = force, k = proportionality constant, q and q' = The two point charges, r = distance between the two charges.

Make r the subject of the equation,

r = √(kqq'/F).......................... Equation 2

Given: q = q' = 75.0 nC = 75×10⁻⁹ C, F = 1.00 N

Constant: k = 9.0×10⁹ Nm²/C².

Substitute into equation 2

r = √[ (75×10⁻⁹ )²9.0×10⁹/1]

r = 75×10⁻⁹.√(9.0×10⁹)

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r = 711.75×10⁻⁵

r = 7.12×10⁻³ m

r = 7.12 mm

Hence the distance between the point charge = 7.12 mm

3 0
3 years ago
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