What is the formula of the ion formed when potassium achieves noble-gas electron configuration

Answers

Answer 1

Answer:

Answer;

K+

Explanation;

-Noble gas configuration is the electron configuration equivalent to noble gases or group 8 elements. According to the octet rule an atom of an element gains or looses electrons to attain noble gases configuration which is the stable configuration, such that an atom has attained maximum number of electrons in the outermost energy level.

-For instance potassium is an alkali metal, consisting of one valence electron in the outermost energy level. For an atom of potassium to attain octet configuration or noble gases configuration it will have to loose one electron, thus forming a positively charged ion of potassium, K+.

Answer 2

Answer: potassium is an alkali metal which means that it only needs to get rid of one electron to achieve a noble gas configuration. Since it only needs to get rid of one electron the ion will be a cation with a charge of +1 which means the symbol will be K⁺.

I hope this helps. Let me know if anything is unclear.

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Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the sugars can’t be separated by filtration. Under which category will you classify it?suspension
colloid
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Answers

Here, the solution can't be separated by filtration means, the solute is dissolved at greater extent with solvent. The category would be: Colloid

In short, Your Answer would be: "Colloid"

Hope this helps!

Answer:

colloid

Explanation:

The ____ contains the highest concentration of ozone.a. troposphere
c. stratosphere
b. mesosphere
d. exosphere

Answers

C. The stratosphere. About 90% of the ozone is in the stratosphere which begins about 8 miles above the Earth's surface.

Answer: Option (c) is the correct answer.

Explanation:

A layer above the troposphere and below the mesosphere is known as stratosphere.

This layer of stratosphere contains about 90% concentration of ozone and there is no occurrence of weather in this layer.

The occurrence of ozone in stratosphere makes it warmer.

Therefore, we can conclude that the stratosphere contains the highest concentration of ozone.

Secondary succession can only occur as a transition from primary succession.

Answers

false because it's falsely

Answer:

false

Explanation:

edge 2022

if the proper dosage of a drug is 2.0mg/kg of body weight, how many milligrams (mg) of the drug would a 110 lb individual need? (5%)

Answers

110lbs (1 kg / 2.204 lbs) (2.0mg / 1 kg) = 99.818

What is the atomic number of zirconium? 39 40 41 42

Answers

Option (b)

Zirconium belongs to group IV and 5th period of the periodic table. The electronic configuration is $[Kr]4d^(2)5s^(2)$ here, Kr belongs to 18th group (noble gas) with atomic number 36 and electrons per shell is 2, 8, 18, 8.

Since, atomic number is equal to number of protons and number of electrons, atomic number of zirconium will be 36+2+2=40.

Thus, atomic number of zirconium is 40.

Atomic number of zirconium is 40

the formula of aluminium sulphide is Al₂S₃. Explain why the formula has a ratio of two aluminium ions for every three sulphide ions.

Answers

Molar mass of Al = 27.0 g/mol
Molar mass of S = 32.1 g/mol
Molar mass of Aluminium sulfide = 27.0 x 2 + 32.1 x 3 = 150.3 g/mol
% of Al (there are 2 Al atoms) in Aluminium sulfide = $(54.0)/(150.3) * 100 = 35.9%$
% of S (there are 3 S atoms) in Aluminium sulfide = $(96.3)/(150.3) * 100 = 64.1%$
Assume the percentages to be masses, so:
In 100.0 g of Aluminium sulfide, n (Al) = $(35.9)/(27.0) = 1.33 mol$
In 100.0 g of Aluminium sulfide, n (S) = $(64.1)/(32.1) = 2.00 mol$
Convert values to a molar ratio,
1.33 : 2.00
Divide by smallest ratio value,
1 : 1.50
Multiply each ratio value by a factor of 2 to eliminate the decimal,
2 : 3

Hence why the empirical formula of Aluminium sulfide is $Al_(2) S_(3)$

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