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son4ous [18]
4 years ago
8

Mendeleev arranged the elements by what physical property?

Chemistry
2 answers:
ch4aika [34]4 years ago
6 0
A.) <span>Mendeleev arranged the elements on the basis of "Atomic Number".
So, option A is your answer!

Hope this helps!</span>
Nadya [2.5K]4 years ago
6 0

the answer is really atomic mass, I took the test

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what is the difference between the number of electrons in an atom of selenium and the number of electrons in an atom of aluminum
igomit [66]

Answer:

The atomic number of Selenium is 34. This means that Selenium possesses 34 electrons.

The atomic number of Aluminium is 13. This means that Aluminium has 13 electrons.

Hence, there is a difference of 21 between the number of electrons in an atom of selenium and the number of electrons in an atom of aluminium.

Selenium has 6 electrons in it's outer most shell whereas aluminium has 3 electrons in its outer most shell. As a result, aluminium will have a greater tendency to lose one of its outer most electrons to become stable.

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3 years ago
Salt is dissolved in a flask of tap water. Distilling the mixture causes the salt to separate from the water. Which type of ener
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D.

The water must be heated and removed in distillation, so thermal energy is required.
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3 years ago
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Air flows according to differences in thermal energy. If a warm air mass is located in the northeast United States and a cold ai
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Answer:

The airflow will be northwest.

Explanation:

A warm moist air mass moves northwest over an arid and cool area.

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What characteristics of sodium and chlorine atoms allow them to form the stable compound sodium chloride, Also known as table sa
katrin2010 [14]
Atoms 'like' to have 8 valence electrones. sodium has one electron 'in excess' and chlorine 'lacks' in one. so they just exchange :) both are happy. then the ionic bond is formed because chlorine is now charged negative (additional electron) and sodium is charged positive (gave up one electrone) - the opposite charges cause electrostatic pull. many atoms, many bonds and thats how salt is built.
3 0
3 years ago
PLS help, 20 points for you<br><br> I need a Molecular, and Ionic equations:<br> H2CO3 + LiOH -
STatiana [176]

The molecular equation of H₂CO₃ and LiOH:

H₂CO₃ (aq) + 2LiOH (aq) →  Li₂CO₃ (aq)  + 2H₂O (l)

The net ionic equation of the reaction of H₂CO₃ and LiOH:

H⁺ (aq)  + OH⁻ (aq)  →  H₂O (l)

<h3>What are the net ionic equations?</h3>

The net ionic equation of a chemical reaction can be described as an equation that expresses only those ions, elements, or compounds, that directly contributed to that chemical reaction.

The chemical equation for the reaction of H₂CO₃ and LiOH:

H₂CO₃ (aq) + LiOH (aq) →  Li₂CO₃ (aq)  + 2H₂O (l)

The complete ionic equation for the above reaction H₂CO₃ and LiOH is:

2H⁺ (aq) +  CO₃²⁻ (aq) + 2Li⁺ (aq) + 2OH⁻  → 2Li⁺ (aq) + CO₃²⁻(aq) + 2H₂O (l)

In the ionic equation, the Lithium and carbonate ions appear unchanged on both sides of the equation. When we mix the two solutions, neither the Lithium nor carbonate ions participate in the reaction. So Lithium and carbonate ions can be eliminated from the ionic equation.

H⁺ (aq)  + OH⁻ (aq)  →  H₂O (l)

Learn more about the net ionic equation, here:

brainly.com/question/15466794

#SPJ1

6 0
1 year ago
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