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4 years ago

How many valence electrons does aluminum (Al) have available for bonding? 1 2 3 4

2 answers:

6 0

The electronic configuration of Al is 2,8,3. So therefore Aluminum has 3 valance electrons available.

We know this because of the number of electrons in the outermost shell.

I hope this helps

zhuklara [117]4 years ago

5 0

Answer:

Explanation:

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In which medium would light have the longest wavelength?

emmainna [20.7K]

Color implies visible light, so to answer your question: red light has the longest wavelength (~620 - 740 nm). However, there also exists light with even longer wavelengths that is not visible to the human eye, from infrared light to radio waves (with wavelengths that are meters long!)

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4 years ago

is a polyprotic acid. Write balanced chemical equations for the sequence of reactions that carbonic acid can undergo when it's d

Burka [1]

Answer:

H₂CO₃ H₂O ⇄ HCO₃⁻ + H₃O⁺ Ka1

HCO₃⁻ + H₂O ⇄ CO₃⁻² + H₃O⁺ Ka2

CO₃⁻² + H₂O ⇄ HCO₃⁻ + OH⁻ Kb1

HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻ Kb2

Explanation:

Formula for carbonic acid is: H₂CO₃

It is a dyprotic acid, because it can release two protons. We can also mention that is a weak one. The equilibrums are:

H₂CO₃ H₂O ⇄ HCO₃⁻ + H₃O⁺ Ka1

HCO₃⁻ + H₂O ⇄ CO₃⁻² + H₃O⁺ Ka2

When the conjugate strong bases, carbonate and bicarbonate take a proton from water, the reactions are:

CO₃⁻² + H₂O ⇄ HCO₃⁻ + OH⁻ Kb1

HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻ Kb2

Notice, that bicarbonate anion can release or take a proton to/from water. This is called amphoteric,

6 0

3 years ago

WILL MARK BRAINLIEST WORTH 20 POINTS PLEASE HELP ASAP

s2008m [1.1K]

Answer:

Explanation:

Hydrogen and chlorine need to be balanced. There is an equal amount of magnesium on each side

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3 years ago

Why don’t vegetable oil and water mix?

alexdok [17]

Answer:

Because oil is less dense than water, it will always float on top of water, creating a surface layer of oil.

Explanation:

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4 years ago

Atoms form chemical bonds to satisfy the rule and to become .

soldi70 [24.7K]

Answer: Atoms form chemical bonds to satisfy the<u> Octet</u> rule and to become <u>stable.</u>

Explanation:

The tendency of atoms to attempt to get a noble gas configuration that is eight valence electrons is said to be octet rule. This is done to attain noble gas configuration and stability.

In order to attain stability the atoms tends to have eight electrons in its valence shell which can be obtained by either by sharing of electrons or complete transfer of electrons.

For example : As we know that the sodium has one valence electron, so if giving it up then the result in the same electron configuration as the neon and chlorine has seven valence electrons, so if it takes one it will have eight and the result in the same electronic configuration as the argon which is stable.

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4 years ago