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NARA [144]
2 years ago
5

If a compound has two atoms of aluminum (AI) and three atoms of oxygen (O) what would its chemical formula look like?

Chemistry
1 answer:
liberstina [14]2 years ago
3 0

Answer:

Al₂O₃

Explanation:

that's the molecular formula for aluminum oxide/alumina.

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What does the group number on the periodic table tell you about the electron configuration of a
jarptica [38.1K]

Answer:

The group number in the periodic table represents number of valence electrons of the elements in a certain group.

Explanation:

There are s, p, d, and f blocks, which you can see in periodic table

The s-block and p-block together are usually considered main-group elements, the d-block corresponds to the transition metals, and the f-block encompasses nearly all of the lanthanides (like lanthanum) and the actinides (like actinium)

There are three main principles, which may useful for you:

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Hope this helps!

4 0
3 years ago
How can electronegativity be used to explain the reaction we see in terms of the numbers and types of bonded being formed in lit
kolezko [41]

Explanation:

Lithium is an electropositive element that readily loses electrons.

Oxygen is electronegative and it will readily accept electrons.

 Due to this significant electronegativity differences between the two species they form electrovalent or ionic bonds between them.

  2atoms of Li lose two electrons:

      Li  →  Li²⁺ + e⁻

             Lithium isoelectronic with helium

 For oxygen;

      O + 2e⁻   →  O²⁻

                          Oxygen is isoelectronic with Neon

Two ions of the lithium combines with the oxygen to form the bond;

                   4Li + O₂  →  2Li₂O

The electrostatic attraction between the two ions forms the ionic bond

5 0
3 years ago
When calcium hydroxide is formed, heat is released. Calculate the amount of heat (in kJ) released when 2 moles of calcium hydrox
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Answer:

C

Explanation:

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Type the letter of the correct answer in the blank space. The image shows the combustion of methane. Which equation represents t
Talja [164]

Answer:

CH4 + 2O2 → CO2 + 2H2O

Explanation:

7 0
2 years ago
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